A man known to be a victim of haemophilia mar | vedclass

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

Question

(B) Haemophilia is an $X$-linked recessive disorder.Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The man is a victim

Vedclass · Accepted Answer

Half of their children will be bleeders

Vedclass · Answer

(B) Haemophilia is an $X$-linked recessive disorder.Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The man is a victim of haemophilia,so his genotype is $X^hY$.The woman is normal but her father was a bleeder $(X^hY)$,which means she must have inherited the $X^h$ allele from him. Thus,her genotype is $X^hX$.When they marry,the cross is $X^hY 	imes X^hX$.The possible offspring genotypes are:$1. X^hX^h$ (Haemophilic daughter)$2. X^hX$ (Carrier daughter)$3. X^hY$ (Haemophilic son)$4. XY$ (Normal son)Out of these four possibilities,two are affected (haemophilic). Therefore,half of their children will be bleeders.

$A$ man known to be a victim of haemophilia marries a normal woman whose father was known to be a bleeder. Then it is expected that:

Similar Questions

Which of the following disorders is more commonly observed in males than in females?

If all the sons are haemophilic and all the daughters are normal when a haemophilic father mates with a normal mother,this character is:

$A$ normal woman,whose father was colour blind,marries a normal man. What is the chance of occurrence of colour blindness in the progeny (in $;\%$)?

An albino lady marries a normal man having one gene for albinism. They have $3$ daughters and $1$ son. The son will be

Who is known as the father of human genetics?

Vedclass Test Series

Exam Paper Generator

Online Exam Module