A) The males containing the single affected X chromosome are colour blind
B) Heterozygous females are colour blind
C) Males having affected Y chromosome are colour blind
D) Affected X chromosome has much high affinity to Y chromosome as compared to unaffected X chromosome
Correct Answer: A
Solution :
Because colour blindness is a recessive sex-linked disease, genes of which are present exclusively on non-homologous segment of X chromosome, so males need only one affected chromosome to express the character whereas females need both the affected chromosomes to exhibit the same.
You need to login to perform this action.
You will be redirected in
3 sec
