Answer:
When an organism completely dies out, that organism is extinct.
Mutations in genes cause
A. Variation
B. Competition
C. Reproduction
Answer:
Hello There the Correct answer is A. Variations.
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Hope it helps!
Two short-tailed Manx cats are bred together. They produce 3 kittens with long tails 5 short tails and 2 without tails. From these results, how do you think tail length in these cats are inherited? Show the genotypes for both the parents and the offspring to support your answer.
Answer and Explanation:
There are three phenotypes, so it seems that this an example of incomplete dominance, with the short tail being the intermediate form between long-tail and no-tail. Incomplete dominance is a condition where neither of the alleles completely dominates over the other one. Dominant alleles cannot completely cover up the recessive alleles. Descendents possess an intermediate phenotype between the two parental phenotypes and not the dominant one, which would appear if this would be the case of complete dominance.
Available data:
Two short-tailed Manx cats are bred together. F1: 3 kittens with long tails, 5 short tails, and 2 without tails.The T gene might express the tail trait. T allele expresses long the tail and is dominant over t allele which expresses the absence of the tail.
So, homozygous dominant individuals, TT, are long-tailed animals
homozygous recessive individuals, tt, have no tail
Heterozygous individuals, Tt, are short-tailed animals, the intermediate form.
Cross: Two short-tailed Manx cats are bred together
Parental) Tt x Tt
Gametes) T t T t
Punnet Square) T t
T TT Tt
t Tt tt
F1) 1/4 TT = Long-tailed animals
2/4=1/2 Tt = Short-tailed animals
1/4 tt = untailed animals
The ratio 3:5:2 of the progeny in the example is close enough to the Mendelian ratio 1:2:1.
Answer:
This is a case of incomplete dominance. Consider the genotypes below:
LL - long tailed
Ll - short tailed
ll - no tail
The parent genotype is Ll. This means they have the ability to produce offspring with either of the 3 given phenotypes depending on the combination of alleles that get passed down. The cross would be the following way:
L l
L LL Ll
l Ll ll
There's a 25% chance of long-tail, 50% chance of short-tail and 25% chance of no-tail.
Hope that answers the question, have a great day!
The top, exposed layer a has undergone
A. an uncomformity
B. erosion
C. tilting
D. folding
P.S. I NEED THIS LIKE NOW!
I WILL MARK BRAINLIEST
Why do decomposers break down plant and animal waste products? I will mark you as brainlist
choose:
To keep the nitrogen cycle going
To produce ammonium
To obtain energy
Decomposers break down plant and animal waste products - To obtain energy
Decomposers obtain nutrients and energy by breaking down dead organisms and animal wastes.
decomposers release nutrients, such as carbon and nitrogen, back into the environment.These nutrients are recycled back into the ecosystem so that the producers can use them.Thus, decomposers break down plant and animal waste products - To obtain energy
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Mary Anning reconstructed the fossil skeletons of many animals new to science. During her studies, she discovered that some species have become extinct.
Which of the following is one main reason a species becomes extinct?
A. overproduction
B. increased variation
C. decreased competition
D. climate change
Answer:
Hello There. The correct answer is D. Climate change.
Because it shows that Anning continued to support herself selling fossils. Her primary stock in trade consisted of invertebrate fossils such as ammonite and belemnite shells, which were common in the area and sold for a few shillings. Vertebrate fossils, such as ichthyosaur skeletons, sold for more, but were much rarer.
Hope It Helps! .ω.
What is the name of the organ?
Some mammals have an organ that connects the mother
and developing offspring, allowing for the exchange of
materials like nutrients, gases, and wastes.
mammary gland
placenta
pouch
crop
Answer:
the placenta is your answer
Explanation:
the placenta provides the nutrients and oxygen to the fetus.
A_____ can rush downhill as a huge mass of soil,water,and rock,leaving a bare scar in the hillside
Answer:
Landslide.
Explanation:
Answer:
landslide
Explanation:
why did the aliens come to earth
A. someone is trying to kill them
B. someone has accused them of murder
C. they wish to take over planet earth
D. they are ambassadors from their planet.
Answer:D
Explanation:
Heart muscle cells remain in the Go stage. Why might this be important for
cardiac function?
Answer:Cardiac Myocyte Cell Cycle Control in Development, Disease and Regeneration
Explanation:hope it helps
In what ways did Charles Lyell impact Charles Darwin’s theory of evolution? What type of relationship did Darwin have with Charles Lyell? How did Darwin learn about Charles Lyell's ideas?
Answer:
They both believed that continuous and gradual change is law of nature
Explanation:
Charles Lyell's “Principles of Geology “ encouraged Charles Darwin to think of evolution of living organisms as a slow process just like the slow geological processes taking place since millions of years. As per Charles, the slow and little contribution of continuous geological events shaped the present geological attributes of the earth. Likewise Charles Darwin’s theory of evolution also earmarked accumulated effects of small gradual changes over immense spans of time. They both believed that continuous and gradual change is law of nature.
List one property that water and oil do not share.
Answer:
Water is polar and Oil is non-polar.
Explanation:
New Deal Agency
Goal
Reduce unemployment
Works Progress Administration
Social Security Administration
Prevent poverty among the elderly
Federal Deposit Insurance
Corporation
Protect citizens from bank failures
?
Securities and Exchange
Commission
Which item best completes the chart?
A. Provide nutritious food for the unemployed
B. Ensure mortgages against economic recession
C. Protect again future economic crises
D. Promote foreign trade for American businesses
Answer: Protect against future economic crises
Explanation:
New Deal Agency in which unemployment is reduced and Social Security Administration prevents poverty among the elderly, protects against future economic crises again, hence option c is correct.
What is New Deal Agency?The Social Security Administration was founded in 1935 as a separate organization. Its main responsibilities were for public assistance, unemployment insurance, and old-age insurance.
Payroll taxes help to support Social Security, it covers medical expenses, medication, and in some situations, a stipend for the elderly, with New Deal Agency.
Therefore, protection from future crises in the New Deal Agency for Social Security completes the chart, hence option c is correct.
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A species can develop genetic diversity______
A. Immediately
B. over a short period of time
C. over a long period of time
D. over any penod of time
Please help!! I am doing unit test! Should give 40 points!! Please help!!!!
Answer:
C. over a long period of time
Explanation:
Which two organ systems work together to provide a structural framework for movement?
A. skeletal and muscular
B. muscular and endocrine
C. integumentary and skeletal
D. endocrine and integumentary
Answer:
Skeletal and Muscular
Explanation:
They help work together to provide support to maintain the body together and to help move.
PLZ MARK BRAINLIEST!!!
Answer:
A. Skeletal and Muscular
The ring canal, stone canal, radial canals, and madreporite are all parts of the
system
O a. Nervous
O b. Water Vascular
O c. Circulatory
d. Digestive
A capital letter indicates a/an ______ allele. A) inferior
B) dominant C) superior D) recessive E) mutant
Answer:
(B)
Explanation:
Most people working with Punnett squares mark a capital letter as a dominant allele.
A recessive allele would be marked by a lowercase letter.
Explore: Use the Gizmo to create three more carbon paths, each starting and ending in the atmosphere. Label each location with A for atmosphere, B for biosphere, G for geosphere, or H for hydrosphere. (You can also use P for the anthroposphere if you like, or just include it in the biosphere.)
Carbon-dioxide gas is essential for maintaining life on earth.
Carbon-dioxide present in the atmosphere comes from breathing of animals and volcanic eruption. this carbon-dioxide absorb by the plants (biosphere) in the process of photosynthesis. This carbon-dioxide is incorporated in the soil (geosphere) with the dead bodies of plants and animals and decomposition of these bodies occurs and carbon-dioxide gas again releases in the atmosphere. Carbon-dioxide gas is also dissolved in the water bodies where it is required by the plants for photosynthesis and made food for the marine animals.
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Why do some traits only have 2 phenotype's.
Answer:
The phenotype really only depends on the parents phenotype.
Explanation:
Where are the strongest jet streams located?
A.over high altitudes
B.over land
C.in the lower atmosphere
D.far away from the equator
Answer:
A. over high altitude
Explanation:
the polar jets are the strongest jets, in higher altitudes
What kind of teeth would you expect a badger to have?
adgers are a type of mammal that eats mostly earthworms
and insects. They sometimes eat small mammals, birds,
and reptiles, as well as plant roots and fruit.
some flat and some round
all flat
some sharp and some flat
all sharp
El tejón común, europeo o eurasiático (Meles meles), también conocido como tasugo,6 es una especie de mamífero carnívoro de la familia Mustelidae. Es de tamaño medio y propio del Viejo Mundo.
Answer: Some sharp and some flat
Explanation: They eat both plants and animals, and most animals that are omnivores have both sharp teeth for meat, and flat teeth for plants.
Hope this helps :)
Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon removed from the atmosphere?
Answer: photosynthesis
Carbon dioxide is naturally removed from the atmosphere by photosynthesis, and trees are particularly skilled at storing the carbon that is removed from the atmosphere by photosynthesis.
What processes is carbon removed from the atmosphere?Respiration and photosynthesis are polar opposites of one another. Through photosynthesis, CO2 is taken from the atmosphere and exchanged for O2. During respiration, O2 is taken from the surrounding air and replaced with CO2. However, none of these processes are in balance.
Plants use photosynthesis to transfer atmospheric carbon into the biosphere and transport it up the food chain. They make sugar molecules by chemically combining water's hydrogen and oxygen with carbon dioxide using energy from the sun.
Therefore, Plants open small pores on the surfaces of their leaves during photosynthesis in order to absorb carbon dioxide from the atmosphere and create their own sustenance.
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Erosion is the process by which soil and sediments are moved by gravity, wind, and water. Erosion occurs naturally, but it can be accelerated by human activity. Which of these human activities most contributes to soil erosion? Group of answer choices A.biking on forest trails B.boating on a lake C.cutting down trees .D.fertilizing a lawn (its a science question)
Answer:
A.) Biking on forest trails will most contribute to soil erosion
Explanation:
The soil will move when the bike moves over the area, or it can stick to the wheels and move from one place to another.
As water passes into the guard cells, the pore opens. explain why.
Answer:One of the most important functions of guard cells is to control the closing and opening of the stoma/pores. While the opening of these pores allows water to be released into the environment, it also allows carbon dioxide to enter the cell for photosynthesis (as well as the release of oxygen into the environment).
Explanation:
Answer: guard cells are a pair of cells that surround each of the stoma openings. to open the cells, they have to be triggered by one of many possible environmental or chemical signals. these can include more sunlight or higher than normal levels of carbon dioxide within the cell.
Explanation:
they open to regulate the gas and moisture exchange, hope that this is what you were looking for :)
what is the outer covering of a plant consist of?
Answer:
Dermal Tissue
Explanation:
The outer covering of a plant consist of dermal tissue, which is typically consists of a single layer of epidermal cells.
How can plastic kill marine organisms?
Answer:
They can eat it and choke...also imagine a human eating plastic, how well is that going to go? You can die from eating plastic, the same thing with marine creatures or any animals for that matter.
Explanation:
~Anna
Answer:
They can be killed by plastic by eating it, getting wrapped in PLASTIC bags, and they could get scratched by the cut plastic.
Explanation:
Just trust me as a Marine Biologist
Describe how the Richter scale is used to identify
earthquake's strength.
Answer:
The Richter scale uses a formula based on amplitude of the largest wave recorded on a specific type of seismometer and the distance between the earthquake and the seismometer.
Hope this helps!
Please help with this
Answer:
pepsins
Explanation:
Answer:
A
Explanation:
Any of a group of compounds with varying hormone-like effects, notably the promotion of uterine contractions. They are cyclic fatty acids.
Can bottled water go bad?
(NEED A PARAGRAPH PLZ)
**20 points**
Answer:
No, bottled water cannot go bad.
Explanation:
It is impossible for any sort of water to "expire". But, when in the bottle for to long, the plastic does become dangerous. The bottle begins to leak chemicals into the water. This doesn't make the water toxic, but it can alter the taste of your water.
How do automatic stabilizers help counter the ups and downs of the business cycle ?
In pea plants, green seeds (G) are dominant and yellow seeds (g) are recessive. Two heterozygous plants are crossed. If 60 offspring are produced from this cross, how many of them would you expect to have green seeds? *
Answer:
I dont know like 120???? use google or socratic
