In humans, colorblindness is a recessive, sex-linked trait. What is the probability that the children of a woman heterozygous for colorblindness and a man with
normal color vision will be colorblind?

Explanation:

Taking Xx as heterozygous and XX for normal

Woman =Xx Man =XX

all possible outcomes are XX, XX, XX and Xx

there is 0 probability of having a colorblind child

(But there is a 25 % chance that the child may be a carrier like its mother)

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

the answer

b.) bowling ball