- Punnet Squares -

Question

Complete the Punnet Square and calculate % genotype and phenotype for the following 2 crosses:

A) Genotype of parents RR X rr

1. a. % of each genotype:
2. b. % of each phenotype:  

  B) Genotype of parents Rr X rr

1. a. % of each genotype:
2. b. % of each phenotype:  

Answer 1

1. RR x rr

R R

r Rr Rr

r Rr Rr

a. genotype: 100% Rr

b. phenotype: 100% dominant

1. Rr x rr

R r

r Rr rr

r Rr rr

a. genotype: 50% Rr, 50% rr

b. phenotype: 50% dominant, 50% recessive