Question

By applying the rules of probability to the following cross, Rr x Rr, determine the probability of the offspring being homozygous recessive?
A. 1/2
B. 1/4
C. 3/4

Answer 1

Using the Punnette Square :
R r 
R RR Rr 
r Rr rr 
Hence,
By applying the rules of probability  Rr x Rr, the probability of the offspring being homozygous recessive will be one fourth or a quarter.
SO the best is :

B. 1/4