Question

Explain why generally only the male child suffers from colour blindness...not female??

Answer 1

In males the chromosomes are XY

For a male to be colourblind , the allele should be there which is exclusively placed on X chromosome being the dominant chromosome due to X linked inheritance

But females have XX chromosomes

So for her to be colourblind the allele should be present on both the chromosomes.

If only one allele is there it becomes recessive and is placed on the second X chromosome. This makes her vision normal and just a carrier of colourblind