History related to probability

Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.

A colorblind man marries a women with normal sight who has no history of color blindness in her family. What is the probability of their grandson being colorblind?

A colourblind man marries a woman with normal sight who was has no history of colour blindness in her family. What is the probability of their sons being colourblind?

A colour blind man marries a woam with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind?