A colourblind mother and normal father would have

A colour blind mother and normal father would have

A man whose father was colourblind marries a woman, who had a colourblind mother and normal father. What percentage of male children of this couple will be colourblind?

A man whose father was colourblind marriesa woman, who had a colour blind mother and normal father.What percentage of male children of this couple will be colour blind?

A man, whose father was colourblind, marries a women who had a colourblind mother normal father. What percentage of male children of this couple will be colourblind ?

Down's syndrome is caused by an extra copy of chromosome number 21. what percentage of offspring produced by an affected mother and a normal father would be affected by this disorder ?

Down syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring prodused by an affected mother and a normal father would be affected by this disorder?

Down's syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder