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3 years ago

Use a Punnett square to help answer the question.

1 answer:

6 0

Hm, I thought it would be 0%. . . Since the male (hetero) would be Bb and the female (homo dominant) would be BB, So the dominant gene would be dominant over all of the recessive genes. (BB, BB, BB, Bb).

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Albinism is caused by a recessive mutation. If two albino mice mate and produce offspring with normal pigmentation, what could y

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2 years ago

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2 years ago

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3 years ago

Which plant would go through the process of photosynthesis more quickly?

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3 years ago

Read 2 more answers

A farmer plants Bt cotton that is genetically modified to produce its own insecticide. Of the cotton bollworms feeding on these

-Dominant- [34]

Answer:

the frequency of the resistant allele after one generation is 0.989

Explanation:

Given that :

A farmer plants Bt cotton that is genetically modified to produce its own insecticide.

Of the cotton bollworms feeding on these Bt plants, only 5% survive

i.e the survival rate s = 5% =0.05

unless they have at least one copy of the dominant resistance allele R that confers resistance to the Bt insecticide

Frequency of R allele = 0.01

In order to determine what will the frequency of the resistance allele be after one generation of cotton bollworms fed on Bt cotton; we need to first determine the frequency of the recessive allele r.

According to Hardy-Weinberg Equilibrium ;

p+q = 1

Let p = R and q = r

R + r = 1

0.01 + r = 1

r = 1 - 0.01

r = 0.99

Now; the frequency of the resistance allele after one generation can be calculated as :

$q' = \dfrac{q(1-sq)}{1-(sq^2)}$

where ;

q' = R

q = r

$q' = \dfrac{0.99(1-(0.05 \times 0.99))}{1-(0.05 \times 0.99^2)}$

$q' = \dfrac{0.99(0.9505)}{1-(0.049005)}$

$q' = \dfrac{0.940995}{0.950995}$

q' = 0.989

Thus; the frequency of the resistant allele after one generation is 0.989

3 0

2 years ago