Question

Out of the twins to parents having normal colour vision was colour blind, whereas the other twin had normal vision. Work out the cross. Give two reasons how it is possible.

Answer 1

Answer:

colour blindness is recessive disease

it is more dominant in males than in females because of presence of two xx chromosomes in female.

If the child is male than it will be effected but if the child is female than it will not be affected unless and until both xx chromosomes are diseased