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xxTIMURxx [149]
3 years ago
13

True or False? Natural Selection occurs when a genetic variation in a population produces different rates of survival and reprod

uction?
Biology
2 answers:
erik [133]3 years ago
7 0
The answer is True. Hope this helps.

Agata [3.3K]3 years ago
3 0
True because the population rate can change drastically or it can drop a bit.
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Is this a picture of DNA or RNA?
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Answer:

RNA

Explanation:

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3 years ago
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What is the term "basic unit of matter" refer to? A.Atoms.. B.Elements.. C.Molecules..
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I belive the answer is A
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The gene for petal color in a flower has incomplete dominance, so that individuals with two A1 alleles (A1A1) are black, individ
Verdich [7]

Answer:

The probability of getting a mottled offspring is 0%. There is no A2 allele involved in the cross.

Explanation:

<u>Available data</u>:

  • The gene for petal color in a flower has incomplete dominance
  • Two A1 alleles (A1A1) express black color
  • Two A2 alleles (A2A2) express white color
  • One of each allele (A1A2) express mottled color

In a cross between two black flowers, there is no allele A2, there are just two alleles A1. So, the cross is:

Parental)    A1A1    x    A1A1

Gametes)  A1   A1       A1   A1

Punnet Square)     A1         A1

                   A1    A1A1     A1A1

                   A1     A1A1     A1A1

F1 Phenotypes: 100% black flowers

F1 Genotype: 100% A1A1

There are 0% of probabilities of getting a mottled offspring.

7 0
3 years ago
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Why does the sodium potassium pump require ATP?
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Answer:

The sodium–potassium pump is found in many cell (plasma) membranes. Powered by ATP, the pump moves sodium and potassium ions in opposite directions, each against its concentration gradient. In a single cycle of the pump, three sodium ions are extruded from and two potassium ions are imported into the cell.

Explanation:

Hope I helped!

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2 years ago
What causes uncontrolled cell growth and what is it called?
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           ........ Hope it helps, Have a good rest of the day:)
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