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

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