What will be the percentage of affected sons, | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Colour blindness is an $X$-linked recessive disorder.Let $X^C$ be the allele for colour blindness and $X$ be the normal allele.The father is colou

Vedclass · Accepted Answer

$0$

Vedclass · Answer

(A) Colour blindness is an $X$-linked recessive disorder.Let $X^C$ be the allele for colour blindness and $X$ be the normal allele.The father is colour-blind,so his genotype is $X^C Y$.The mother is normal,so her genotype is $X X$.When these parents cross: $X^C Y 	imes X X$.The possible offspring genotypes are:$1$. $X X^C$ (Carrier daughter)$2$. $X X^C$ (Carrier daughter)$3$. $X Y$ (Normal son)$4$. $X Y$ (Normal son)Since all sons receive their $X$ chromosome from their mother and $Y$ chromosome from their father,and the mother is normal $(X X)$,all sons will be normal.Therefore,the percentage of affected sons is $0 \%$.

What will be the percentage of affected sons,whose father is colour-blind and mother is normal (in $\%$)?

Similar Questions

Which disorder is caused when the synthesis of the $\beta$-globin chain of hemoglobin is affected due to a single gene $HBB$,leading to a quantitative change in the hemoglobin structure?

Which disease is caused by a point mutation?

Find the $ODD$ one out,with respect to $X$-linkage.

The affected male in the pedigree chart is symbolised by

$A$ man and a woman,who do not show any apparent signs of a certain inherited disease,have seven children ($2$ daughters and $5$ sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following modes of inheritance do you suggest for this disease?

Vedclass Test Series

Exam Paper Generator

Online Exam Module