If a colourblind woman marries a normal man w | vedclass

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

Question

(B) Colour blindness is an $X$-linked recessive disorder.Let $X^c$ represent the allele for colour blindness and $X$ represent the normal allele.$A$ c

Vedclass · Accepted Answer

$100$

Vedclass · Answer

(B) Colour blindness is an $X$-linked recessive disorder.Let $X^c$ represent the allele for colour blindness and $X$ represent the normal allele.$A$ colourblind woman has the genotype $X^c X^c$.$A$ normal man has the genotype $XY$. Since his father was colourblind,it does not affect his genotype because the $Y$ chromosome is inherited from the father and the $X$ chromosome from the mother. Thus,the man remains $XY$.Crossing $X^c X^c$ (woman) with $XY$ (man):Offspring genotypes: $X^c X$ (carrier daughter),$X^c Y$ (colourblind son).All sons will receive the $X^c$ chromosome from the mother and the $Y$ chromosome from the father.Therefore,$100 \%$ of their sons will be colourblind.

If a colourblind woman marries a normal man whose father was colourblind,what are the chances of their son being colourblind (in $\%$)?

Similar Questions

$A$ person is suffering from the disease phenylketonuria, which is an autosomal recessive disease. Which of these is lacking in the person?

What is the full form of $PKU$?

If an albino man marries a normal woman and $50$ offspring are albino and $50$ are normal,the woman is:

How many types of genotypes are observed in sickle cell anemia?

Which one is the incorrect statement with regard to the importance of pedigree analysis?

Vedclass Test Series

Exam Paper Generator

Online Exam Module