A couple,both carriers for the gene of sickle | vedclass

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

Question

(D) Sickle cell anaemia is an autosomal recessive disorder. Let the normal allele be $Hb^A$ and the sickle cell allele be $Hb^S$.Both parents are carr

Vedclass · Accepted Answer

$25$

Vedclass · Answer

(D) Sickle cell anaemia is an autosomal recessive disorder. Let the normal allele be $Hb^A$ and the sickle cell allele be $Hb^S$.Both parents are carriers,meaning their genotype is $Hb^A Hb^S$.When a cross is performed between two carriers $(Hb^A Hb^S 	imes Hb^A Hb^S)$,the resulting offspring genotypes are:$25\% Hb^A Hb^A$ (Normal),$50\% Hb^A Hb^S$ (Carrier),$25\% Hb^S Hb^S$ (Affected/Anaemic).Therefore,the probability of having an anaemic child is $25\%$.

$A$ couple,both carriers for the gene of sickle cell anaemia,are planning to get married. What are the chances of them having an anaemic child (in $\%$)?

Similar Questions

Knowing that albinism is determined by a recessive gene in humans,the presence of albinism in children born to a couple proves that:

Choose the correct option for the offspring of a colorblind woman and a normal man.

If both parents are carriers for thalassemia,which is an autosomal recessive disorder,what are the chances of pregnancy resulting in an affected child?

Marriages between close relatives should be avoided because they have a higher incidence of:

In the following symbols used in human pedigree analysis,identify the symbol that denotes consanguineous mating.

Vedclass Test Series

Exam Paper Generator

Online Exam Module