STD 12 - 4. principal of inheritance and variation — BIOLOGY STD 12 Science — Question

$(i)$ It is a sex-linked recessive disorder

$(ii)$ It results in defect in either red or and green cone cells of eye resulting in failure to discriminate between red and green colour

$(iii)$ The gene for colour blindness is present on $X$-chromosome

$(iv)$ It is observed more in males $\left(X^{c} Y\right)$ because of presence of only one $X$-chromosome as compared to two chromosomes in famales