A husband and wife have normal vision,but the | 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 disorder.Since the husband and wife have normal vision,their genotypes are:Husband: $X^CY$ (where $C$

Vedclass · Accepted Answer

$0$

Vedclass · Answer

(D) Colour blindness is an $X$-linked recessive disorder.Since the husband and wife have normal vision,their genotypes are:Husband: $X^CY$ (where $C$ is normal vision,$c$ is colour blind).Wife: $X^CX^c$ (she is a carrier because her father was colour blind,$X^cY$).The cross is: $X^CY 	imes X^CX^c$.The possible genotypes of their children are: $X^CX^C$ (normal daughter),$X^CX^c$ (carrier daughter),$X^CY$ (normal son),$X^cY$ (colour blind son).For a daughter to be colour blind,she must inherit the $X^c$ allele from both parents $(X^cX^c)$.Since the father has normal vision $(X^CY)$,he cannot pass the $X^c$ allele to his daughter.Therefore,the probability of their daughter being colour blind is $0\%$.

$A$ husband and wife have normal vision,but the fathers of both of them were colour blind. What is the probability of their first daughter being colour blind (in $\%$)?

Similar Questions

$A$ boy is colour blind. Among his two sisters,one is colour blind and one is a carrier (normal). Who is colour blind in his family?

If a colour-blind man marries a woman who is homozygous for normal colour vision,the probability of their son being colour-blind is

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

The affected male in the pedigree chart is symbolised by

Which disorder is caused when the synthesis of the $\beta$-globin chain of hemoglobin is affected due to a single gene $HBB$,leading to a quantitative change in the hemoglobin structure?

Vedclass Test Series

Exam Paper Generator

Online Exam Module