A couple with normal vision bear a colour blind child work out a cross to show how it is possible and mention the sex of the affected child .x

A color-blind child is born to a normal couple. Work out a cross to show how it is possible. Mention the sex of this child.

A color-blind child is born to a normal couple. Work out a cross to show how it is possible. Mention the sex of this child.

A normal couple has their first child, who is haemophilic. Work out a cross to show how it is possible. State the possibility of the normal and the haemophilic children, along with their sexes, that can be born to them.

(a) A couple with blood groups 'A' and 'B' respectively have a child with blood group 'O'. Wrok out a cross to show how it is possible and the probable blood groups that can be expected in their other off-springs. (b) Explain the genetic basis of blood groups in human population.

Colour blindness is a recessive trait. A couple with normal vision has two sons - one colourblind and one with normal vision. If the couple has two daughters, what proportion of them will have normal vision?

A colour blind boy is born to a couple with a normal colour vision. Write the genotype of the parents.

A woman with normal vision but with colurblind father marries a coloublind man The fouth child of the couple is a boy .This boy

A woman with normal vision whose mother was colourblind married a man with normal vision. The woman is pregnant with her first child. What is the probability that the cild will be a colour blind boy?

If the mother is a carrier of colour blindness and the father is normal, show the possible genotype and phenotype of the offspring of the next generation, with the help of a punnet square.

A woman with normal vision, but whose father was colour blind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy :