Question

What is the probability of offspring having the genotype AaBbcc when you cross AABbCc with AaBbCc?

A) 1/8
B) 1/4
C) 1/2
D) 3/4

Answer 1

The probability of offspring with genotype AaBbcc from a cross between AABbCc and AaBbCc is 1/8, calculated by multiplying the chance of each allele combination.

Step-by-step explanation:

To determine the probability of offspring with the genotype AaBbcc when crossing AABbCc with AaBbCc, we can use Mendel's principles of segregation and independent assortment.

• For the A allele, the first parent can only pass on A, while the second parent has a 1/2 chance of passing on a.
• For the B allele, the first parent has a 1/2 chance of passing on b, and the second parent also has a 1/2 chance of passing on b.
• For the C allele, the first parent can only pass on c, while the second parent has a 1/2 chance of passing on c.

Thus, the overall probability is the product of probabilities for each gene: (1/2 * 1/2 * 1/2), which equals 1/8.

The probability of offspring having the genotype AaBbcc from the cross AABbCc *x* AaBbCc is 1/8. Therefore, the correct answer is A) 1/8.