The breeds of dogs are all
one species, but they have
incredible genetic diversity.
Who first realized that
variation mattered, even
though he didn't know the
exact mechanism?
A. Lamarck
B. Aristotle
C Darwin
D. Griffith

Answers

Answer 1

Answer:

C Darwin

Explanation:

Charles Darwin, the father of evolution theorised that within any population, there exists variation in traits which help the animals adapt to their environment and help them survive.

In the same vein, he believed that the breeds of dogs are all one species, but they have incredible genetic diversity.

Therefore, Charles Darwin first realized that variation mattered, even though he didn't know the exact mechanism.


Related Questions

What is Anatomy and physiology

Answers

Answer:

Anatomy: The branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.

Physiology: The branch of biology that deals with the normal functions of living organisms and their parts.

Explanation:

Anatomy = The science that deals with the form and structure of organic bodies; anatomical structure or organization is Anatomy.

Physiology = A branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved is Physiology.

Hope it will help:)❤️

geosphere burying organisms
hydrosphere respiration of marine life
biosphere photosynthesis atmosphere burning things

Answers

Answer:

This question is incomplete, the question is asking to match each activity with the sphere to which it adds carbon or CO2.

ANSWERS:

Geosphere = burying organisms

hydrosphere = respiration of marine life

biosphere = photosynthesis atmosphere = burning things

Explanation:

This question describes the types of spheres we have. The respective activities that occur in each sphere that adds CO2 or carbon are as follows:

- Geosphere: This refers to the solid part of the Earth. Dead organisms are buried in the geosphere (soil) where their carbon remains can be deposited.

- Hydrosphere: This constitutes all of the water bodies (sea, river, stream, ocean) on the Earth. When marine organisms respire in water, carbon dioxide (CO2) is released.

- Biosphere: A sphere consisting of all living things (plant, animal, microbes etc.) on Earth. Plants as a living organisms photosynthesize and make use of carbon dioxide to produce glucose, which stores in the plant.

Atmosphere: The gaseous component of the Earth. Burning substances release carbon based gases into the atmosphere.

what is uropoiesis?

Answers

Answer:

The production and excrection of urine

Answer:

The production and excretion or urine.

what are amino acids used to build
EDG2021

Answers

Answer:

Alanine

Arginine

Asparagine

Aspartic Acid

Cysteine

Glutamic acid

Glutamine

Glycine

Histidine

Isoleucine

Leucine

Lysine

Methionine

Phenylalanine

Proline

Serine

Threonine

Tryptophan

Tyrosine

Valine

Selenocysteine

Pyrrolysine (not used in human protein synthesis)

Of these 20 amino acids, nine amino acids are essential:

HELP!!!

1. In a parent pea plant with the allele pair Gg, what is the probability that one gamete will contain the G allele? Why?
2. In a parent pea plant with the allele pair GG, what is the probability that one gamete will contain the g allele? Why?
3. In a parent pea plant with the allele pair gg, what is the probability that one gamete will contain the g allele? Why?

Answers

Answer:

If the gamete will get either G or g, the probability will be 1/2 of getting G.

Explanation:

all question 3 answer is that. Because all 3 of question are same. only repeated three times

In a parent pea plant with the allele pair Gg, the probability that one gamete will contain the G allele is 0.5. This is because there are two possible outcomes in which one must definitely fall. So, it is 1/2.

What is Allele?

Alleles may be characterized as the alternative form or versions of a gene that are responsible for particular traits in living organisms. They carry a code of genetic sequences within generations.

In a parent pea plant with the allele pair GG, the probability that the gamete will contain the g allele is zero. This is because there is no presence of allele g that can be determined within any gametes. So, it is not possible to get g in the pair allele of GG.

In a parent pea plant with the allele pair gg, the probability that one gamete will contain the g allele is 1 or 100%. This is because both carry g alleles. So, the probability is 100%.

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Marianela takes a huge drink of her coffee, assuming that it is at a tolerable temperature, and the heat sears her mouth. Although the pain is so great that her reflex is to spit out the coffee, she does not do so. The reflex to spit out the coffee is inhibited at the

Answers

Answer:

This question lacks options, options are:

A) glial cell

B) interneuron

C) sensory neuron

D) motor neuron.  

The correct answer is D.

Explanation:

The brain sends instructions to the muscles that control voluntary movement through nerve cells called motor neurons. The function of the motor neuron is basically to carry the information that comes from the descending pathways of the spinal cord, in order to generate an activation in the tissues of the skeletal and visceral muscles of all parts of the body. Motor neurons need the information sent to them by sensory or efferent neurons. Since in order to perform the appropriate muscle movements for the situation, our brain must receive information from the outside. By sending sensory stimulation through interoreceptors, motor neurons can regulate visceral activity, stimulating or inhibiting the activity of their effector tissues. In this way, our nervous system integrates the information from both types of neurons and allows us to move and react according to the demands and circumstances of our external context.

A sample from a stock of a bacterial colony in liquid media was diluted by a factor of 106, and 2 ml of this dilution was spread on a Petri dish of solidified media. 56 colonies were observed. What was the concentration of bacteria of the initial stock?

Answers

Answer:

28 × 10⁶ colonies/ml

Explanation:

Let C be the concentration of bacterial in the initial stock. When it is diluted by a factor of 10⁶, the new concentration is C' = C/10⁶.

When 2 ml of this concentration is spread on a Petri dish of solidified media, 56 colonies were produced. The number of colonies, n after spreading the 2 ml of C' is C' × 2 ml = 2C' = 2C/10⁶.

So, n = 2C/10⁶.

Since the number of colonies after spreading on a Petri dish of solidified media is 56, n = 56 colonies.

So, 2C/10⁶ = 56

Making C subject of the formula, we have

C = 56 × 10⁶/2

C = 28 × 10⁶ colonies/ml

So, the initial concentration of bacteria is 28 × 10⁶ colonies/ml

Scenario 1:

Genetic engineering can be used to create more productive strains of farm animals used for milk and meat production. By adding genes to an animal’s DNA, the animal can be made to be more resistant to common infections. This can reduce the need to administer large doses of antibiotics to the animals.

Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)

What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)


Scenario 2:

Mike was adopted, and his biological family history is unknown. Although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. Mike has heard about commercial laboratories that can compare segments of your DNA to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. The results of these types of tests are highly inconclusive. If Mike’s DNA showed that he shares similarities in a segment of DNA with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. These tests can cost more than $2,500 and are not covered by many insurance companies.

Do you think that Mike should undergo the genetic tests? Explain your answer. (2 points)

What are potential pros and cons of having such tests done? (5 points)

Describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations. (3 points)

Answers

Due to brainly not accepting my essay, I have instead included a image of it. :D

why is growth important to living things?​

Answers

Answer:

However, growth in living things is because of different internal processes occurring inside the body of the living organisms mainly because of the formation of new cells. The increase in number and mass of individuals are two unique characteristics of growth. Multicellular organisms exhibit growth by cell division.

why cells are sometimes called the building block of life?​

Answers

Answer:

cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.

Is the podocyte process of the glomerular capillary wall the same as the endothelial layer?

Answers

Answer:

The podocytes have long foot processes called pedicels, for which the cells are named (podo- + -cyte). The pedicels wrap around the capillaries and leave slits between them. Blood is filtered through these slits, each known as a filtration slit or slit diaphragm or slit pore.

According to Sandel, when companies companies attempt to incentivize employees to quit smoking:__________
a) It never works.
b) There are no data on this incentive scheme.
c) It tends to work.
d) Employees tend to return to smoking when the incentive ends.

Answers

Answer:

employees tend to return to smoking when the incentive ends

Explanation:

because employees love to smoke on breaks and they are addicted to smoking.

The second generation of purebred cross of -hom-ozygo us recessive organism, with a —hom-ozygous dominant organism, contain a ratio of approximately _______ expressed dominant traits to recessive traits.
A. 2:1
B. 1:1
C. 1:3
D. 3:1

Answers

Answer:

D. 3:1

Explanation:

Gregor Mendel, in one of his numerous studies, performed a cross between purebred dominant (TT) pea plants and purebred recessive (tt) pea plants. All the offsprings of this cross appeared heterozygous tall (Tt) in the F1 generation.

However, when he self-crossed the F1 generation i.e. Tt × Tt, Mendel obtained a phenotypic ratio of 3 tall plants (dominant traits) : 1 short plant (recessive). This showed that the masked gene (recessive) was still present.

Which of the following are parts of the cardiovascular system? |a) Blood O b) Heart c) Lungs O d) Blood vessels

Answers

Which of the following are parts of the cardiovascular system?

a) Blood

b) Heart

d) Blood vessels

Choose: a); b); d)

Answer:

[tex]except(c \: ) \\ al l \: are \: ur \: option \\ thank \: you[/tex]

which of the following is a density- independent factor?
1 mate availability
2 parasitic infestation
3 disease transmission
4 lack of rainfall

Answers

Answer:

4. Lack of Rainfall

Explanation:

How are human affiliative and aggressive behaviors different from what is seen in nonhuman primates? Provide specific examples.

Answers

Answer:

Humans are less aggressive as compared to non-human primates.

Explanation:

Human affiliative and aggressive behaviors are different from nonhuman primates because humans do more friendly and peaceful acts and are less aggressive in anger as compared to non-human primates which are less friendly and more aggressive in anger. Due to more aggressive behaviour of non-human primates causes more damaged to other animals and humans as compared to humans who is less damaging and aggressive.

Lymph ______ are found throughout the body and are a signal of a disease, infection, or problem if they become and remain swollen for long periods of time.
______ are pathogens that cannot be killed with antibiotics because they are non-living. They take over cellular organelles to replicate and spread.
Because they are also eukaryotes with their own cell membranes and membrane-bound organelles, ______ are often difficult to combat with medicines.
A cell signal called ______ is produced by mast cells. These molecules cause more fluid to spread to an infected area.
_______ are the types of cells that produce antibodies.
All pathogens have unique identifying molecules on their surfaces called ______. Antibodies bind to these, and targeting the pathogen to be destroyed by the immune system.
______ is a non-specific response to disease, in which the body temperature rises

Answers

Answer:

nodes

Viruses

fungi

histamine

B-cells

antigens

Fever

When a paper cut breaks the skin, it introduces outside microorganisms into the cut. The body recognizes the break in the skin. Mast cells produce histamines, which cause more blood and lymph fluid to flow to the wound. This increased flow brings phagocytic white blood cells to the area, which destroy invading organisms until the blood can clot and the skin can heal over the cut, preventing more organisms from entering the body. If a cut is too deep or too wide, special care such as stitches and antibiotics could be needed to prevent infection.

Explanation:

PENNFOSTER !

Which statement is not true about the field of science?
it is based on observations and explanations of the natural world.

Answers

You are right with your answer please

Actual Question:
Which statement about the purpose of the field of science is false? (1 point)

Science is used to investigate the natural world.

Events of the natural world can be explained by science.

Science works to establish a collection of unchanging truths.

Useful predictions come from derived explanations of science.
Answer:

Science works to establish a collection of unchanging truths.

Explanation:

I took the test

What distance was covered by the bicycle during the 10 seconds?

Answers

Sorry did you attach a picture with any sort of information? I can’t see it but I wanna help

Which organism exhibits behavioral adaptation?

Answers

Answer:

Humans

Birds

Bears

Chameleons

Cicadas

Explanation:

A Behavioral Adaptation is something an animal does - how it acts - usually in response to some type of external stimulus.

Examples of some Behavioral Adaptions:

Migration, Hibernation, Dormancy, Camouflage.

Answer:

Behavioral adaptations are the actions that organisms take in order to stay alive. Behavioral adaptations include things like bird cries and migration. Evolution produces adaptations. Evolution is a long-term change in a species.

OAmalOHopeO:

which climate does sparrow live hot or cold

Answers

Answer:

Hot ok please give me brilliance

Explanation:

please

Role of mitosis in plant growth and development

Answers

Answer:

The mitosis cell division helps in vegetative growth in plants. It also helps in healing of wounds

Issued in 1974, 45 CFR 46 raised to regulatory status:
A) The 1974 National Research Act
B) The Nuremberg Code
C) Kefauver-Harris Drug Amendments to the Federal Food, Drug & Cosmetics Act
D) US Public Health Service Policy

Answers

Hello!

The answer is D, The U.S Public Health Service Policy. Its main purpose was providing protection for human subjects for research work which was conducted by federal agencies. You can read more about it on HHS.gov, as it is a very interesting regulation.

I hope this helps! :)

Issued in 1974, 45 CFR 46 raised to regulatory status US Public Health Service Policy. Option D

What is the regulatory status?

The restrictions known as the Common Rule for the protection of human subjects in research done by or supported by federal agencies are outlined in Title 45 of the Code of Federal restrictions, Part 46. These laws define moral principles and requirements for the protection of research subjects who are being used as human subjects.

The US Public Health Service (PHS) published the policy that would eventually become 45 CFR 46 in 1974. This policy established standards for the examination and approval of research involving human subjects as well as the legal foundation for the protection of those individuals. Informed consent, weighing risks and benefits, and the creation of Institutional Review Boards (IRBs) to regulate research techniques were all adopted.

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how are traits which are not beneficial to a living organism removed from its gene pool

Answers

Answer:

recessive traits is the answer

Organisms who carry those traits are less likely to be chosen as a mate, slowly reducing that gene from the species

Which type of seedless plant has a complex leaf arrangement off a vein?
a. java moss
b. club moss
c. ferns
d. horstails

Answers

B. Club moss

Explanation:

This is because club moss is an seedless evergreen plants that have scale-like leaves.

Can you plz mark me as brainliest!!!

answer : club moss

explanation: Because they have vascular tissue, seedless vascular plants

are often larger than nonvascular plants. Vascular tissue is spe-

cialized to transport water to all of the cells in a plant.

What does the QRS complex represents as??​

Answers

Answer:give me brainliest

Explanation:

A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. Ventricular depolarization occurs in part via an accessory pathway (AP) directly connecting the atrium and ventricle and thus capable of conducting electrical impulses into the ventricle bypassing the AV-His Purkinje conduction system.This term can be confusing, as not all ECG leads contain all three of these waves; yet a “QRS complex” is said to be present regardless.

Explanation:

QRS complex represents as ventricular depolarisation

For each of the following structures, first indicate its function in the fetus; then, note its fate (what happens to it or what it is converted to after birth).

a. Umbilical artery
b. Umbilical vein
c. Ductus venosus
d. Ductus arterious
e. Foramen ovale

Answers

Answer:

1. Functions:

a. Umbilical artery >> carries deoxygenated blood from the fetus to the placenta

b. Umbilical vein >> transports oxygenated blood from the placenta to the fetus

c. Ductus venosus >> allows oxygenated blood from the placenta to bypass the liver

d. Ductus arterious >> allows most of the blood from the right ventricle to bypass the fetus's non-functioning lungs

e. Foramen ovale >> oxygenated blood from the umbilical vein to bypass the pulmonary circulation

2. After the bird:

1. Umbilical artery >> medial umbilical ligament

2. Umbilical vein >> round ligament of the liver

3. Ductus venosus  >> ligamentum venosum

4. Ductus arteriosus >> ligamentum arteriosum

5. Foramen ovale >> fossa ovalis

Explanation:

The umbilical artery is a paired artery localized in the abdominal and pelvic regions, which carries deoxygenated blood from the fetus to the placenta through the umbilical cord. The medial umbilical ligament is the obliterated part of the umbilical artery that arises from the internal iliac arteries. In utero, the umbilical arteries carry waste products back to the placenta, whereas the umbilical vein carries oxygenated blood from the placenta to the fetus. The round ligament of the liver (also known as ligamentum teres hepatis) is a remnant of the umbilical vein that  exists in the embryonic stage, it connects the left lobe of the liver to the umbilicus. The ductus venosus is a slender shunt that allows oxygenated blood from the placenta to bypass the liver, it connects the intra-hepatic portion of the umbilical vein to the inferior vena cava. The ligamentum venosum is an extrahepatic, slender, and fibrous remnant of the fetal ductus venosus that travels between the left portal vein and the inferior vena cava. The ductus arteriosus is a fetal artery that connects the aorta to the pulmonary artery. The ligamentum arteriosum is a nonfunctional vestige of the ductus arteriosus, it is attached to the superior surface of the pulmonary trunk. The foramen ovale is an oval-shaped, small, opening in the wall (septum) between the two upper chambers of the heart. The fossa ovalis is a vestige stricture of the foramen ovale of the embryonic heart, which forms a depression in the right atrium of the heart.

A ______, such as a bean, has two seed leaves.

Answers

Answer:

A dicotyledonous plant

hope this helps you

Considering your knowledge of carbohydrates, evaluate the use of chitin as a component of health foods.

Answers

Answer:

Carbohydrates may be defined as energy-rich foods such as sugars and starches. if consumed in excess or not properly metabolized in the body, carbohydrates may lead to obesity and which may also lead a person to severe number of diseases.

Chitins are components of the exoskeletons of foods such as shrimps, crabs and snails, and insects.

Chitin's use as a component in healthy foods is based on its health benefits.

For example it promotes weight loss , prevents obesity, relieving constipation and preventing inflammation associated with refined carbohydrates, cookies and candies

Please use the following information to answer the questions below. The southern grasshopper mouse feeds regularly on the Arizona bark scorpion, the most venomous scorpion in the United States. While attempting to capture the scorpion, the mouse usually gets stung multiple times by the scorpion but does not seem to be affected. While attempting to capture the scorpion, the mouse's heart rate increases, and there is an increase in epinephrine in the mouse's blood. What nervous system division is responsible for the mouse's physiological state

Answers

The sympathetic nervous system is responsible for the mouse's physiological state.

 

The nervous system divides into the central nervous system and peripheral nervous system.

In the central nervous system, we have the brain and the spinal cord.

The peripherical nervous system, which is all the nerves that are not in the spinal cord or the brain, is divided into:

The somatic nervous system, which is the one that makes the conscious movements of our body.The autonomic nervous system consists of:

-Sympathetic nervous system. It is the one that works under stress. It gives the fight or flight response preparing the body for a dangerous situation. It increases the heart rate and epinephrine's release. Epinephrine is a hormone that helps in this response stimulating the sympathetic system.

-Parasympathetic nervous system. It is the one that works in calm situations, like after we ate, regulating digestion, and trying to save energy for any upcoming event.

In conclusion, as there is an increase in epinephrine and heart rate, and the mouse is "fighting" against a scorpion, the nervous system division responsible for this physiological state is the sympathetic nervous system.

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Other Questions
una grua ejerce una fuerza paralela y constante de 3000N sobre un auto y lo desplaza 15m a traves de la carrera que trabajo realizo la grua? what is photosynthesis? hope yall have a great day. Please answer this!! Y Corporation's password protection policy requires all employees to change their passwords every week. Because of this requirement, technical support spent a significant amount of time solving password problems for employees who forgot their passwords. To increase efficiency, the CEO of Y Corporation canceled the policy and subsequently required employees to change their passwords once a yeara. collusionb. management overridec. external events beyond an organization's controld. unsuitable objectives for internal controle. human errorf. cost v. benefit find a factor of 5, 15 and 25 PLEASE HELP MAX POINTS AND BRAINLIESTWhich of the following statements best proves that the law of conservation of mass is obeyed during photosynthesis?a. The starting total number of oxygen atoms in carbon dioxide is equal to the ending total number of oxygen atoms in glucose.b. The starting total number of oxygen atoms in carbon dioxide gas is equal to the ending total number of oxygen atoms in glucose and oxygen.c. The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction.d. The total mass of glucose and carbon dioxide formed from photosynthesis is equal to the total mass of oxygen and water used up during the reaction. Last night, the two dinner specials at Will's favourite restaurant were salmon fillet and steak. The restaurant served 15 salmon fillets and 5 steaks. What percentage of the specials served were salmon fillets? 12. A concave lens has a focal length of 10 cm. An object 2.5 cm high is placed 30 cm from the lens. Determine the position and size of the image. (3) which part of the passage provides details that are also in the image Instructions: Find the value of the trigonometric ratio. Make sure tosimplify the fraction if needed.3240B24ATan C = Find the largest positive integer that will divide 542, 436, 398 leaving reminders 7, 11, 15 respectively Geometry - Triangle d) In the given figure, BE = EC and CE is the bisector of ZACB. Prove that ZBEC = ZACD. E B D made many items themselves.A. SettlersB. FarmersC. Pioneers You are planning to attend college next year. The total cost of tuition and textbooks is $10,000. If you go to school, your room and board will cost you $5,000. If you did not go to school, however, you would live at home, and your total room and board would only be $1,000. Additionally, if you did not go to college, you would work a job making $20,000 for the year.1. In terms of room and board alone, what would be opportunity cost of attending college. Be sure to explain your answer 2. What are the explicit costs of attending school? How much should be included for room and board?3. What would be the implicit cost of attending college next year?4. What would be the total opportunity cost of attending college next year? c)what formula would be in the cell E2 What have George and Lennie discussed many times? (from Of Mice and Men)a) Lennie hiding in the brush if he gets into troubleb) the differences between them and other ranch handso the rabbits Lennie will own somedayd) both banda Terry estimates that the costs of insurance, license, and depreciation to operate his car total $460 per month and that the gas, oil, and maintenance costs are 34 cents per mile. Terry also estimates that, on average, he drives his car 2,000 miles per month. Required: a. How much cost would Terry expect to incur during July if he drove the car 1,534 miles Exercise 3: Choose the best option to complete the sentence.1.................. are you doing? - Im reading a book.A. WhomB. WhoC. WhoseD. What2.................. coffee is this? Its mine.A. WhoB. WhichC. WhoseD. What3.................. of these problems are you most interested in?A. WhoB. WhomC. WhichD. What4.................. do you know about this subject, and who taught it to you?A. WhichB. WhoC. WhatD. Whom5.................. is responsible for the accident?A. WhoseB. WhoC. WhichD. Whom6.................. children are they? - The Browns.A. WhoseB. WhichC. WhomD. Who7.................. doesnt understand what the teacher has explained?A. WhichB. WhoseC. WhoD. What8.................. is the weather like today?A. Whatb. WhoC. WhichD. Whose9.................. the longest river in the world: the Amazon or the Nile?A. WhomB. WhatC. WhoD. Which10.With ................. did you go to the seaside?A. whoB. whomC. whatD. which Why is page one of the story the importance of being earnest important?Scene: Morning-room in ALGERNON'S flat in Half Moon StreetThe room is luxuriously and artistically furnished. Thesound of a piano is heard in the adjoining room. LANE isarranging afternoon tea on the table, and after the music hasceased, ALGERNON enters.ALGERNON. Did you hear what I was playing, Lane?LANE. I didn't think it polite to listen, sir.ALGERNON. I'm sorry for that, for your sake. I don'tplay accurately any one can play accurately but Iplay with a wonderful expression. As far as the piano isconcerned, sentiment is my forte. I keep science forLife.LANE. Yes, sir.ALGERNON. And, speaking of the science of Life, haveyou got the cucumber sandwiches cut for Lady Bracknell?LANE. Yes, sir. (Hands them on a salver.)ALGERNON. (Inspects them, takes two, and sits down on thesofa.) Oh! ... by the way, Lane, I see from your book thaton Thursday night when Lord Shoreman and Mr. Worthing were dining with me, eight bottles of champagne are entered as having been consumed.LANE.Yes, sir; eight bottles and a pint.ALGERNON.Why is it that at a bachelors establishment the servants invariably drink the champagne? I ask merely for information. factor that affect gravitation