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liberstina [14]
3 years ago
14

Which of the following increases genetic variation by forming entirely new alleles?

Biology
1 answer:
kicyunya [14]3 years ago
4 0

Answer:

Mutation causes brand new alleles the others just modify the rates at which preexisting alleles appear in the population.

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You want to estimate the number of canvas backs (a type of duck) at the Sacramento Wildlife Refuge. In two days you capture 200
Vsevolod [243]

Answer:

Option A 400 individuals

Explanation:

Using this formula, we can estimate the population size of the canvas backs as this is a capture-recapture method.

N = (MxC) / R

Where N = estimated Number of individuals in the population

M = number of individuals captured and Marked = 200

C = total number Captured the second time (with and without a mark) = 200 and

R= number of individuals Recaptured (those with a mark) = 100

Thus, we have

N = (MxC) / R

= (200 x 200) / 100

= (40,000) / 100

= 400 individuals.

7 0
4 years ago
Name and explain three different ways micro-organism<br>Obtain energy ​
nikklg [1K]

Explanation:

photosynthesis

mutualism

decomposers

chemotrophs

photosynthesis:

Photosynthetic bacteria use the energy of the sun to make their own food. In the presence of sunlight, carbon dioxide and water are turned into glucose and oxygen. The glucose is then turned into usable energy

mutualism:

Some bacteria depend on other organisms for survival. For example, some bacteria live in the roots of legumes, such as pea plants. The bacteria turn nitrogen-containing molecules into nitrogen that the plant can use.

decomposers:

Bacteria known as decomposers break down wastes and dead organisms into smaller molecules. These bacteria use the organic substrates they break down to get their energy, carbon, and nutrients they need for survival.

8 0
3 years ago
Why would only one person getting sick from a new disease be considered an outbreak?​
N76 [4]

Answer:

It's a new disease so no one can be sure of how fast it spreads, how it spreads, its symptoms, or anything else about it. It's an outbreak because nothing or not much is known about it.

8 0
3 years ago
A cell membrane has a double layer of molecules. These molecules are made up of a phosphorus-containing “head” and two long, fat
podryga [215]
D I believe, in the picture that is attached explains

6 0
3 years ago
Which of the following statements is true?
alexgriva [62]

Answer:

Dominant genes are stronger than recessive genes

Explanation:

4 0
3 years ago
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