Natural selection states that complex organisms evolved through random mutations alone. True or False?

Answers

Answer 1

Answer:

False.

Explanation:

This statement is false because organisms don't evolve - populations do. New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population. However, because mutation rates are low relative to population growth in most species, mutation alone doesn't have much of an effect on evolution.


Related Questions

Which organelle is the primary site of protein production? A) nucleus B) ribosomes C) cytoplasm C) cell membrane

Answers

Answer: b

Explanation:

Just trust

Answer:

B, ribosomes :)))))

Explanation:

The adrenal glands produce hormones that impact short-term responses, including fear and anger.

Norepinephrine and __________ are examples of these hormones.

Answers

Answer:

Epinephrine, also known as Adrenaline

Explanation:

Adrenaline impacts short-term mood and can take seconds to flood your system.

*it may also be cortisol, I'm not sure if there's more context. Cortisol takes longer to work and can have long-term effects.

Write a few sentences explaining whether the following theme from The Outsiders is universal: “People often struggle to fit in; they question the right way to live their lives.”

Answers

Sample Response: This theme is universal. It can apply to all people, and most people struggle with this question.

When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? Two diverged populations are capable of mating and producing viable and fertile offspring. Hybrid individuals may have reduced fitness and thus be strongly selected against. Hybrid individuals are always allopolyploid and are thus unable to mate with either of the original species. One species has a selective advantage, so as hybridization continues, the other species will go extinct.

Answers

Answer:

Two diverged populations are capable of mating and producing viable and fertile offspring.

Explanation:

Although the biological concept of species says that two different species can not mate and produce viable fertile descendants, the hybrid zones are characterized for being an area where two different genetically groups meet and reproduce. These groups might be the same or different species.

This is a frequent phenomenon in nature, and widely common geographically and among taxonomic groups. It is not rear that different sympatric populations, with a short time of divergence and similar reproductive strategies, can hybridize and even generate new populations that get reproductively isolated from their parentals.

When talking about sympatry we refer to two similar species that coincide in part or their whole distribution area.  

These new populations are even morphologically different from the parental forms, which allow them to colonize new habitats and niches, promoting diversification.

Hibridation zones are very important to conserve, just because they are points of genetic diversity generation and diversification areas.

When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals can form. This is possible because hybrid individuals are always allopolyploid and therefore are unable to mate with any of the original species, to understand more we need to know that......

Hybrid animals

Hybridization, that is, the process through which different species reproduce, generating an offspring, is not considered a very common phenomenon in nature. This is because, in general, species have a distinct number of chromosomes, the cell structures that contain genes. These differences in the number of chromosomes can make the development of the embryo unfeasible, as the alignment of equivalent chromosomes from the female and the male are necessary for the division of the fertilized cell to occur. When this alignment does not occur, the cell does not reproduce and dies. However, in some cases, even with the lack of chromosome pairs, reproduction between different species is successful, generating the hybrid. However, the birth of the individual does not mean that its survival is guaranteed. Often, the hybrid generated is weaker than its parents and does not survive; in other cases, the hybrid can adapt better to the environment than the species that conceived it.

With this information, we can conclude that hybrid animals are a cross between two different species, but this hybrid can have several complications for its survival.

Learn more about  Hybrid animals in https://brainly.com/question/32314

You watch a scientist dissolve some sugar in a liter of water and then place some of this solution into a dialysis bag, tying both ends shut. The she places the bag into a beaker of distilled water. What word best describes the solution outside of the bag?

Answers

Answer:

shoulda used ziploc?

Explanation:

Answer:

Hypotonic

Explanation:

When sugar is dissolved into the water, it adds molucules, making the water have a higher concentration. If you have a semipermable membrane between the two, it would create a process called osmosis. The hydrogen bonds would all go to the side with the higher concentration side, also known as the hypertonic side. The side with less bonds would be called the hypotonic side.

During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned

Answers

Answer:

No

Explanation:

Trofim Lysenko was a Biologist in the then Soviet Union, who did not believe in the fundamental laws of science. Selective breeding is the method developed by humans to change certain characteristics of species to desired outcomes. This is based on the fact that living things have inheritable traits encoded in genes that can be passed from one generation to another.

Lysenko did not believe in this fact. He rather believed that when exposed to the right environment, plants and animals soon become adjusted to the exposure and can then develop traits that would be passed on to their offsprings. He applied this theory of his when he exposed wheat plants to cold believing that they would develop tolerance to cold. This failed woefully and resulted in severe starvation that caused the death of millions of people in the Soviet Union.  

ang Chlorophy
1. Which cell types remain in a non dividing stars and do not comes the trials
process?
-cles of Cells
A muscle cells and nerve cells
B skin cells and muscle cells
cles of Cells
C muscle cells and skin cells
D liver cells and nerve cells

Answers

Answer:

A. Muscle and Nerve cells

Explanation:

These two kinds of cells remain in a non-dividing state. The rest of these cell types multiply/divide.

How is genetic information preserved during the copying of DNA? View Available Hint(s) Hint 1.opened hint How is genetic information preserved during the copying of DNA? The information is preserved because DNA codes for RNA, which codes for protein. Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C. Genetic information is preserved by base pairing between A and T and between G and C across the two strands of the double helix. The information in DNA is copied into RNA, which is used as a template to copy back to DNA.

Answers

Answer:

Genetic information is preserved in the linear sequence of the building blocks A, T, G, and C.

Explanation:

Deoxyribonucleic acid contains genetic information in the bases i.e the Nitrogenous bases Adenine, thymine, Guanine, cytosine are the store for coding genetic information, in them lies the genetic information of an organism. Each base is coding for different gene the is found in the organism.

After the information on the DNA have been moved to an intermediary Ribonucleic acid (RNA) it is been translated into an amino acid a building block of protein containing all the genetic information coded for by the Nitrogenous base.

A school aged child is brought to the clinic by her parents. The parents state that the child will be engaged in some activity at home and then just stop suddenly for a few seconds and then pick up the activity again as if there had been no break in what she was doing. This child should be assessed for what neurological disorder?
a.) Tonic-clonic seizures
b.) Absence seizures
c.) Myoclonic seizures
d.) Status epilepticus

Answers

Answer:

Absence seizures

Explanation:

This is a  type of seizure also known as ( Petit Mal seizures).It   is common in children, (between 4-14 years) and  characterised with intent stare at empty space for few seconds(which may occur in 10 -100 times in a day) and  does not caused any significant harm.However,with frequent occurrence it may  affect concentration.It does not exceed  15 seconds

it is caused by repeated electrical signals in the brain due to interference  in the synaptic transmission and also  to alterations in levels of Neurotransmitters .

Staring into empty space,

Fluttering of eyelids

Intermittent stoppage of speech  are some of the symptoms.

Treatment is with medications.,

b.) Absence seizures, or petit-mal seizures, which in English literally means “small bad”, signifying that these seizures are relatively less harmful. Hope this helps!

If Earth’s average surface temperature continues to change over the next 30 years at the same rate it changed between 1980 and 2010, the average temperature will most likely be around

Answers

Answer:

Its B....

Explanation:

Get that 100.

The hydrogen atom has one _____ and one _____.

Answers

Answer:

The hydrogen atom has one proton and one electron.

Answer: the h2 atom has one electron and one proton.

E = p^+

Just keep in mind that electrons ar always equal to the protons. so you don’t have to worry !

Hey I know it's a lot who ever answer all I'm going to give brainliest answer thxs 1) DNA is a microscopic molecule made up of only _____ chemicals. 2) In the __________ all that was known about life was what could be seen through a _________________________. 3) Chromosomes are made of _______________ and ______________. 4) The ingredients that make DNA are known by the letters _____________________. 5) The first pictures of DNA were taken using _______________ crystallography. 6) To determine the structure of DNA, Watson & Crick chose to build _______________. 7) Watson & Crick announced they had a DNA model on _____________________. 8) After seeing the model, Rosalind Franklin said that it was _____________________. 9) Chargaff’s rule stated that the amount of _____ and the amount of _____ were equal and the amount of _____ and the amount of _____ were equal. 10) The X-pattern of DNA was the result of a shape known as a _________________________. 11) In a molecule of DNA there could be hundreds of millions of _____________________. 12) The letter ____ always combines with ____ and the letter ____ always combines with ____. 13) Watson & Crick produced their final model on _________________________. 14) Rosalind Franklin never received a Nobel prize because she _______________. 15) For DNA to be replicated it must first be _____________________. 16) The single strand of DNA is then ________________ and formed into a ________________.

Answers

Answer:

1) nitrogen bases

2) the 1950’s; microscope  

3) DNA and protein

4) nucleotides

5) X-ray diffraction

6)  ball-and-stick model-building

7) 25 April 1953

8) was critical to Watson and Crick

9) adenine-timine; guanine-citosine

10) double helix

11) base pairs  

12) G with C and A with T

13) 1953

14) died

15) unwound

16) synthesized; a new molecule

Explanation:

Nitrogenous bases are used to construct nucleotides. Until the discovery of the helical shape of the DNA molecule, were only possible to identify the genetic material (chromosomes) by the microscope. Chromosomes are composed of DNA and proteins (histones). Nucleotides are the building blocks of the DNA molecule. The X-ray diffraction data obtained by Rosalind Franklin were used to decipher the DNA structure. The ball-and-stick is a molecular model where atoms are represented by spheres and bonds are represented by rods. Chargaff's rules indicate that the content of cytosine is equal to guanine and adenine is equal to thymine. Rosalind Franklin died of ovarian cancer in 1958.  The double-stranded DNA molecule must be unwound and then the DNA strands serve as templates to synthesize identical DNA molecules.

What does food provide to organisms? homeostasis shelter energy air PLZ HELP ME PLZ PLZ PLZ

Answers

Answer:

Option C. is the correct choice.

Explanation:

Food provides "energy" to organisms.

Best Regards!

Answer:

C. Energy

Explanation:

is the world safe place for animals and plants?




Guys pls answer it ​

Answers

Answer:

No it isn't

Explanation:

Nothing is ever safe everything is constantly trying to kill you and the same goes for animals. Wether it be humans or other animals and even their own bodies.

Answer:

Wildlife sanctuary is the place where wild animals are protected in their natural habitat. Here poaching or capturing the animals is prohibited. Biosphere reserves are the area used to conserve biodiversity like plants, animals and microorganisms. It contains many wildlife sanctuaries and national parks.

Explanation:

One of the needs of today's taxonomy is:

O more information

O more species

O more interpretation

Ofewer species

Answers

Answer:

The correct choice is A

Explanation:

Taxonomy is the process of coining names for and categorising plants and animals into groups based on factors or qualities which are similar and or those which distinguish them.

Taxonomy helps to give meaning to the vast diversity of fauna and flora on planet earth.

Cheers!

Answer:

The answer is A

Explanation:

You can tell because the way that it is

"A type of laser medium that produces a visible blue-green wavelength beam that is absorbed by red-brown pigmented tissue, such as the red hemoglobin in blood, and by the cells that lie under the retina, is a(n)"

Answers

Answer: ARGON LASER

Explanation: An Argon laser is a type of unique laser system that was invented in 1964,it is unique because it uses a noble gas (ARGON) as it's active medium. Argon laser functions by emitting a colored light of blue/green,this light is being absorbed by haemoglobin present in blood cells,the heat produced gives room/allows the laser to close up cells of blood that are ruptured.

all members of the plant kingdom contains chlorophyll? true or false

Answers

Answer:

this is true

Explanation:

if it isnt in the leaves of a plant, then its in the stem, or maybe, the entire thing is green!

flowers have green stems, trees have green leaves, lily pads are green, etc.

hope this helped

Answer:

True

Explanation:

All plants contain chloryphyll

This mammal retains its embryo in its uterus for the full term of the pregnancy. Which mammal is it most likely to be?

Answers

Answer:

The mammal that retains its embryo in its uterus for the full term of the pregnancy is the bat. A koala and the kangaroo both carry their babies to term in pouches.

Explanation:

A testcross involves an individual exhibiting the dominant phenotype but an unknown genotype being crossed with an individual that has a(n) ___________ genotype.

Answers

Answer and Explanation:

You will find the complete answer and explanation in the attached file due to technical problems.

(Scientific method please answer) A _________ is an educated guess about the answer to a question.

Answers

Answer:

A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis could also be called an "educated guess". Another way of thinking about it, is that a hypothesis is a possible answer to the question you've asked.

hoped i helped

Which effects are factors in long-term climate change? Check all that apply.

Answers

decrease in sea ice
increase in permafrost thawing
increase in heat waves
heavy precipitation

Answer:

Earth's orbit around the Sun . Right

ice forming on a lake . Wrong

solar energy . Right

volcanic eruptions. Right

thunderstorms. Wrong

Explanation:

Select the correct answer. What’s the significance to scientists of finding a new, unknown fossil?


A. It allows scientists to formulate new theories.
B. It enables scientists to better differentiate among the various species.
C. It proves that there’s an unlimited supply of fossils to be unearthed.
D. It provides evidence of links between evolutionary species.
E. It provides scientists with a reason to continue their research.

Answers

Answer: D. It provides evidence of links between evolutionary species.

Explanation: The significance to scientists of finding a new, unknown fossil is that it provides evidence of links between evolutionary species.

Organisms arose as a result of these changes, and some of their remains have been preserved as fossils. An organism's type, life history, and preservation method can all be ascertained by studying a fossil. Thus, option D is correct.

What are the features of finding a new, unknown fossil?

They can discover when and how various animals existed millions of years ago by studying fossils. Fossils can sometimes show scientists how the Earth has changed over time.

The discovery of a new, undiscovered fossil is significant to scientists because it shows connections between evolutionary species.

Fossils with remarkably similar geometries are thought to be from the same species. It is considered that fossils with somewhat differing geometries come from a separate species. Usually, the fossil species has been researched and given a name.

Therefore, It provides evidence of links between evolutionary species.

Learn more about fossil here:

https://brainly.com/question/24484886

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Why do turtles hv paddle like flippers ?

Answers

Answer:

The answer is

Explanation:

Turtles have paddle like flippers to push back water while swimming.

Answer:

Turtles hv paddle like flippers so that they can push the water backward, move forward and swim easily

Why does anaerobic respiration produce less energy than aerobic respiration?
A. Glucose is only partially broken down.
B. The process takes a lot of energy, and uses most of what it releases from Glucose.
C. Glucose can't be broken down without oxygen, so the body's other energy source,
lipids are used.
D. Glucose can't be used, so there is only ATP.

Answers

Answer:

A. Glucose is only partially broken down.

Explanation:

Glucose can only be partially broken down in the absence of oxygen, and the byproducts of anaerobic vs aerobic lead to different amounts of energy.

please help! :)

As a student who appreciates the importance of the carbon and oxygen cycles, suggest ways to ensure a balance of carbon dioxide and oxygen content in the air.​

Answers

Answer:

Cyanobacteria provides a very nice way to keep oxygen and carbon dioxide in balance. Cyanobacteria takes in CO2 and releases oxygen into the atmosphere. Hope it helps!

Which activity would most likely cause a rapid breakdown of glucose molecules

Answers

Answer:

A rabbit running a predator

Explanation:

Describe the characteristics of scientific inquiry.

Answers

Answer:

Learner Engages in Scientifically Oriented Questions.

Learner Gives Priority to Evidence in Responding to Questions.

Learner Formulates Explanations from Evidence.

Learner Connects Explanations to Scientific Knowledge.

Learner Communicates and Justifies Explanations.

Hope this helped!!!!

Learner Engages in Scientifically Oriented Questions.
Learner Gives Priority to Evidence in Responding to Questions.
Learner Formulates Explanations from Evidence.
Learner Connects Explanations to Scientific Knowledge.
Learner Communicates and Justifies Explanations.

Why is it necessary to separate oxgynated blood and deoxgynated blood in living organisums?

Answers

Answer:

For efficient transportation of blood.

Explanation:

When you examine fluid that you have drawn from a blood vessel in someone's arm, you find that it is relatively high in carbon dioxide and waste products. Assuming that the fluid comes from a healthy individual, you conclude that the blood vessel from which you have drawn blood could have been ______.

Answers

Answer:

The given blank can be filled with a venule.

Explanation:

A small blood vessel in the microcirculation, which connects the capillary beds to the veins is known as the venules. Various venules combine to form a vein. The walls of a venule are formed of three layers, that is, the inner endothelium formed of squamous endothelial cells, a middle layer of elastic and muscle tissue, and an external layer formed of fibrous connective tissue.  

The size of a venule ranges from 8 to 100 micrometers in diameter and are produced when capillaries come in close association. A venule refers to a small blood vessel that permits the deoxygenated blood high in carbon dioxide and waste products to return from capillary beds to the bigger blood vessels known as veins.  

If you are preparing a report about the effect of climate change on sea level,
whose work would you be most likely to study?
A. Warren Washington
B. Edwin Hubble
O C. Christian Doppler
O D. Charles Kuen Kao

Answers

A. Warren Washington

Answer:

A. Warren Washington

I hope this helps you :)

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Match the underlined word in each verse to its meaning in the context of the poem.the rhythm of a piece of poetry or musica silly or foolish personmeaning, weight, or significancerewarda small stream"In which the burthen of the mystery, / In which the heavy and the weary weight Of all this unintelligible world, / Is lightened:"(from "Tintern Abbey" by William Wordsworth)arrowRight"Faint I, nor mourn nor murmur, other gifts / Have followed; for such loss, I would believe, / Abundant recompence" (from "Tintern Abbey" by William Wordsworth)arrowRight"Hold off! unhand me, grey-beard loon!" (from "The Rime of the Ancient Mariner" by Samuel Taylor Coleridge)arrowRight"nor yet beside the rill,Nor up the lawn, nor at the wood was he;"(from "Elegy Written in a Country Churchyard" by Thomas Gray)arrowRight"Where was heard the mingled measure From the fountain and the caves." (from "Kubla Khan" by Samuel Taylor Coleridge)arrowRight A rectangular box with a square base contains 24 cubic feet. if the height of the box is 18 inches, how many feet are there in each side of the base? The credit terms 2/10, n/30 are interpreted as: Multiple Choice 2% cash discount if the amount is paid within 10 days, or the balance due in 30 days. 30% discount if paid within 2 days. 2% discount if paid within 30 days. 30% discount if paid within 10 days. 10% cash discount if the amount is paid within 2 days, or the balance due in 30 days. fill in the term to complete each sentence a wave carries___ from one place to another. mechanical waves carry energy through___. Hello, a quick question which number is least to greatest 0.359, 0.35, 1 How many solutions does the following equation have ?3x+92x=125x Find 0.01 more than 9.154 All About Animals has two product lines: Cat food and Dog food. Contribution margin income statement data for the most recent year follow:Total Cat Food Dog Food Sales revenue $435,000 $350,000 $85,000Variable expenses $61,000 $21,000 $40,000Contribution margin $374,000 $329,000 $45,000 Fixed expenses $101.000 $49,000 $52,000 Operating income (loss) $273,000 $280,000 $(7,000) Assuming the Dog food is discontinued, total fixed costs remain unchanged, and the space formerly used to produce the line is rented for $26,000 per year, how will operating income be affected? A. Increase $254,000 B. Decrease $19,000 C. Increase $527,000 D. Increase $19,000 The following data relate to the direct materials cost for the production of 50,000 automobile tires: Actual: 725,000 lbs. at $3.00 per lb. Standard: 730,000 lbs. at $2.95 per lb. a. Determine the direct materials price variance, direct materials quantity variance, and total direct materials cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Abica Roast Coffee Company produces Columbian coffee in batches of 6,000 pounds. The standard quantity of materials required in the process is 6,000 pounds, which cost $5.00per pound. Columbian coffee can be sold without further processing for $8.40 per pound. Columbian coffee can also be processed further to yield Decaf Columbian, which can be sold for $10.00 per pound. The processing into Decaf Columbian requires additional processing costs of $9,450 per batch. The additional processing will also cause a 5% loss of product due to evaporation. Columbian coffee can be sold without further processing for $8.40 per pound. Columbian coffee can also be processed further to yield Decaf Columbian, which can be sold for $10.00 per pound. The processing into Decaf Columbian requires additional processing costs of $9,450 per batch. The additional processing will also cause a 5% loss of product due to evaporation. a. Prepare a differential analysis dated August 28, 2012, on whether to sell regular Columbian (Alternative 1) or process further into Decaf Columbian (Alternative 2). b. Should Abica Roast sell Columbian coffee or process further and sell Decaf Columbian? c. Determine the price of Decaf Columbian that would cause neither an advantage or disadvantage for processing further and selling Decaf Columbian. what happened to slaves as a result of the revolutionart war What does empirical fomula means with examples Define:(i) parasitism,(iii) photosynthetic nutrition Whats up guys, pls help 19b)Thanks Trident's corporate headquarters has assessed the performance of its various unrelated business units. In allocating money across these units, Trident uses its general organizational competencies to: Who is Romeos greatest ally in Romeo and Juliet? What is the minimum sample size required to estimate a population mean with 90% confidence when the desired margin of error is 1.25 I think u should make____ a sandwich. Which two statements suggest that the main character struggled to stay warm?A. Once, coming around a bend, he shied abruptly, like a startled horse, curved away from the place where he had been walking, and retreatedseveral paces back along the trail.B. He was a warm-whiskered man, but the hair on his face did not protect the high cheek-bones and the eager nose that thrust itselfaggressively into the frosty air.C. He held on through the level stretch of woods for several miles, crossed a wide flat, and dropped down a bank to the frozen bed of a smallstream.D. The bulge of the earth Intervened between it and Henderson Creek, where the man walked under a clear sky at noon and cast no shadow.E. The man's red beard and mustache were likewise frosted, but more solidly, the deposit taking the form of Ice and increasing with everywarm, moist breath he exhaled. A fishery with populations well below historic levels that has reduced reproductive capacity is called ___________.