Given below is a pedigree showing the inherit | vedclass

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

Question

(D) Myotonic Dystrophy is an autosomal dominant disorder. In a pedigree,a shaded symbol represents an affected individual,and an unshaded symbol repre

Vedclass · Accepted Answer

$1-Mm, 2-Mm, 3-mm$

Vedclass · Answer

(D) Myotonic Dystrophy is an autosomal dominant disorder. In a pedigree,a shaded symbol represents an affected individual,and an unshaded symbol represents an unaffected individual.For an autosomal dominant trait,the unaffected individuals must be homozygous recessive $(mm)$.Person $3$ is unaffected,so her genotype must be $mm$.Person $1$ is an affected male. Since he has an unaffected child,he must be heterozygous $(Mm)$.Person $2$ is an affected female. She has an unaffected child $(3)$,which means she must carry the recessive allele,so her genotype is $Mm$.Therefore,the genotypes are: $1-Mm, 2-Mm, 3-mm$.

Given below is a pedigree showing the inheritance of Myotonic Dystrophy,an autosomal dominant disorder. The genotypes of person $1, 2$ and $3$ in this family tree are:

Similar Questions

Who is known as the father of human genetics?

Which of the following is a genetic disease?

Red-green colour blindness appears due to

Sickle cell anaemia is caused due to the substitution of

Assertion: Haemophilia is a recessive sex-linked disease.
Reason: Haemophilia occurs due to mutation of a structural gene on chromosome $15$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module