posted by Melissa .
Suppose that a clolur blind man has parents with normal vision. Would all his sons be colour-blind ? Was his mother a carrier ? would all his daughters be carriers
The colorblind man is XY with the colorblind gene on the X chromosome.
Which chromosome has to be given to sire sons?
He had to get a colorblind X chromosome from one parent. Who would that be?
Which chromosome would he have to give to sire daughters?
Rephrasing the questions might give you abetter idea of the answers to your questions.