Question

1. a ffee mouse is bred to another ffee mouse. what is the probability that an offspring mouse will be born with the genotype ff ee?

0
1/16
3/16
1/4

Explanation:

Step1: Analyze F - gene probability

For the F - gene, both parent mice have genotype Ff. When two Ff mice are crossed, the Punnett - square analysis shows that the probability of getting FF is $\frac{1}{4}$. The cross of Ff×Ff gives genotypes FF : Ff : ff in a 1:2:1 ratio.

Step2: Analyze E - gene probability

For the E - gene, both parent mice have genotype Ee. When two Ee mice are crossed, the Punnett - square analysis shows that the probability of getting EE is $\frac{1}{4}$. The cross of Ee×Ee gives genotypes EE : Ee : ee in a 1:2:1 ratio.

Step3: Use the product rule

Since the inheritance of the F - gene and the E - gene are independent events (assuming they are on non - linked chromosomes), we use the product rule of probability. The probability of getting FF and EE together is the product of the probability of getting FF and the probability of getting EE. So, $P(FF\ and\ EE)=\frac{1}{4}\times\frac{1}{4}=\frac{1}{16}$.

Answer:

1/16