Question

1. for the genetic cross of rrsstt x rrsstt, what is the probability that an offspring of genotype rrsstt will be produced?

a 1/16
b 1/8
c 1/32
d 1/64

Explanation:

Step1: Calculate prob for rr genotype

Parents: Rr × Rr. Probability of rr is $\frac{1}{4}$

Step2: Calculate prob for Ss genotype

Parents: Ss × Ss. Probability of Ss is $\frac{1}{2}$

Step3: Calculate prob for TT genotype

Parents: Tt × Tt. Probability of TT is $\frac{1}{4}$

Step4: Multiply all probabilities

$\frac{1}{4} \times \frac{1}{2} \times \frac{1}{4} = \frac{1}{32}$

Answer:

C. 1/32