What are the chances of colour-blind daughter | vedclass

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

Question

(D) Colour-blindness is an $X$-linked recessive trait. $A$ woman whose father was colour-blind must be a carrier $(X^cX)$ because she inherits one $X$

Vedclass · Accepted Answer

$50\%$ of sons are colour-blind and all daughters are phenotypically normal.

Vedclass · Answer

(D) Colour-blindness is an $X$-linked recessive trait. $A$ woman whose father was colour-blind must be a carrier $(X^cX)$ because she inherits one $X$ chromosome from her father (who must have been $X^cY$) and one from her mother. When this carrier woman $(X^cX)$ marries a normal man $(XY)$,the cross is as follows: Parents: $X^cX 	imes XY$ Gametes: $X^c, X$ and $X, Y$ Offspring: $X^cX$ (Carrier daughter),$XX$ (Normal daughter),$X^cY$ (Colour-blind son),$XY$ (Normal son). Thus,$50\%$ of the sons will be colour-blind,and all the daughters will be phenotypically normal (though $50\%$ of them will be carriers).

What are the chances of colour-blind daughters and sons being born in a marriage between a normal man and a normal woman whose father was colour-blind?

Similar Questions

Thalassemia and sickle-cell anemia are caused by problems in the synthesis of globin molecules. Select the correct statement.

What does the given symbol represent in a pedigree chart?

Albinism is a congenital disorder resulting from the lack of the enzyme:

If a haemophilic man marries a woman carrier (heterozygous) for haemophilia,what would be the possibility that their daughter would be haemophilic (in $\%$)?

Color blindness is caused by:

Vedclass Test Series

Exam Paper Generator

Online Exam Module