Color-blindness is a sex-linked recessive trait. a color-blind mom and a color-seeing dad have children. in the punnett square, the r represents the dominant allele of seeing color and the r represents the recessive allele of color-blindness.

The answer should be 50% assuming that the dad has one recessive trait. If the dad has no recessive trait then it would be 0%. but most likely its 50%.

Hope this helps :)

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

i dont know it at allnow im just getting points at this pint