A normal woman whose father was colourblind m | 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 trait.$1$. The woman's father was colourblind $(X^cY)$,so she must have inherited the colourblind gene

Vedclass · Accepted Answer

Daughters normal,$50\%$ of sons colourblind

Vedclass · Answer

(A) Colour blindness is an $X$-linked recessive trait.$1$. The woman's father was colourblind $(X^cY)$,so she must have inherited the colourblind gene from him. Since she is normal,she is a carrier $(X^cX)$.$2$. She marries a normal man $(XY)$.$3$. The cross is $X^cX 	imes XY$.$4$. The offspring genotypes are: $X^cX$ (carrier daughter),$XX$ (normal daughter),$X^cY$ (colourblind son),and $XY$ (normal son).$5$. Thus,all daughters are phenotypically normal (though $50\%$ are carriers),and $50\%$ of the sons are colourblind.

$A$ normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion?

Similar Questions

$A$ woman will be colourblind only if . . . . . . .

Red-green colour blindness appears due to

What will be the inheritance pattern of color blindness in children born to parents with normal vision,where the mother is a carrier for the color blindness gene?

Select the incorrect statement with regard to haemophilia.

Phenylketonuria is an inborn error of metabolism that is inherited as:

Vedclass Test Series

Exam Paper Generator

Online Exam Module