In a population of 1000 baby kitties, 40 are white because of a recessive allele (b). Non-white cats are either homozygous dominant (BB) or heterozygous dominant (Bb). What is the frequency of heterozygous kitties in the population?A. 0.2B. 0.32C. 0.8Please show all the work!

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Asked Jan 10, 2019
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In a population of 1000 baby kitties, 40 are white because of a recessive allele (b). Non-white cats are either homozygous dominant (BB) or heterozygous dominant (Bb). What is the frequency of heterozygous kitties in the population?
A. 0.2
B. 0.32
C. 0.8

Please show all the work!

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Expert Answer

Step 1

According to the question,

The total number of the kitties are 1000.

The homozygous recessive kitties are 40 (bb).

We need to determine the frequency of the heterozygous kitties (Bb) in the population.

The given options are:

A. 0.2

B. 0.32

C. 0.8

Step 2

The Hardy Weinberg equations can be used to solve the above problems.

The Hardy Weinberg equations are written on the board.

 

 

In this case,

p2 represents the frequency of BB genotype (homozygous dominant).

q2 represent the frequency of bb genotype (homozygous recessive).

2pq represent the frequency of Bb genotype (heterozygous).

p represents the frequency of B allele and q represents the frequency of b allele.

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Step 3

The question says that the number homozygous recessive kitties are 40.

The frequency of the ...

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