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Using mendelian principles: What is the genotypic ratio of the offspring produced from

crossing a heterozygous white rabbit is crossed with a homozygous black rabbit?
A. 50% White 50% Black
B. 30% White 70% Black
C. 50% Ww 50% ww
D. 50% WW 50% BB​

2 Answers

3 votes

Answer:Step 1

Genotypes are the letters that make up the individual such as BB, bb.

Phenotype is the particular character of organism which is obtained by the expression of these genotypes. Bb represents the white coat of rabbit and bb is black coat.

Gamete (or the sex cells) is usually denoted by letter N. (N= half no. of chromosome).

Step 2

Suppose the coat color is represented by letter B.

Heterozygous (white rabbit) = Bb (one upper case and one lower case letter)

Homozygous (black rabbit) = bb (both lower case letters)

Step 3

A punnett square is defined as a type of square diagram which is used to imagine the genotypes of a definite breeding cross or experiment.

So, with the help of a punnett square we can determine the following:

Genotypic ratio: It is a ratio of different genotypes in the offspring that is obtained from a genetic cross. It is Bb: bb =1:1.

Phenotypic ratio: It is a ratio of unlike phenotypes in the offspring that is obtained from a genetic cross. It is white: black = 1:1.

Explanation for this result:

As, the first rabbit is heterozygous that means it has a dominan...

User Steven Smethurst
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Answer: A. 50% White 50% Black

User Chris Ruffalo
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4.6k points