Two individuals heterozygous for gene Q produced gametes by meiosis, then mated and fertilized one egg. What is the probability that both the egg and sperm will carry the recessive allele?

0.25

Step-by-step explanation:

Following the law of segregation which states that only one of the two gene copies noticeable in an organism is diffused to each gamete (egg or sperm cell) and gene allocation is random.

A heterozygous gene for Q = Qq

If these two individuals mate and produce gametes by meiosis,

The probability that both the egg and sperm will carry the recessive allele is determined as follows:

Qq    ×    Qq

             Q              q

Q           QQ          Qq

q            Qq            qq

The probability that both the egg and sperm will carry the recessive allele qq is 25% or 0.25

597

step-by-step explanation: