Answer:
A) 1/256
Explanation:
Parent 1 : YyTtRrSs
Parent 2: YyTtRrSs
Probability of a YY offspring occurring in a cross between Yy and Yy = 1/4
Probability of a TT offspring occurring in a cross between Tt and Tt = 1/4
Probability of a RR offspring occurring in a cross between Rr and Rr = 1/4
Probability of a SS offspring occurring in a cross between Ss and Ss = 1/4
Total probability of YYTTRRSS =
1/4 * 1/4 * 1/4 * 1/4 = 1/256
Hence, 1/256 of offspring will be YYTTRRSS
