In Huntington's disease,the unaffected person | vedclass

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

Question

(B) Huntington's disease is an autosomal dominant disorder. In an autosomal dominant pedigree,an affected individual must have at least one affected p

Vedclass · Accepted Answer

either person $6$ or $7$ should have the disease,if individual $11$ shows the disease.

Vedclass · Answer

(B) Huntington's disease is an autosomal dominant disorder. In an autosomal dominant pedigree,an affected individual must have at least one affected parent.In the given pedigree,individual $11$ is affected (represented by a filled circle). Since the disease is autosomal dominant,at least one of her parents ($6$ or $7$) must also be affected (represented by a filled symbol).However,in the pedigree,both individuals $6$ and $7$ are unaffected (represented by empty symbols). Therefore,this pedigree is erroneous because it violates the rule of autosomal dominant inheritance.

In Huntington's disease,the unaffected persons are homozygous for normal allele $h$. The following pedigree is erroneous because:

Similar Questions

Carrier of genes of colour blindness are present in

The female children of a haemophilic man and a carrier woman are likely to be:

$A$ color-blind man marries a woman whose father was color-blind. What is the probability of color blindness in their children?

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

The following pedigree chart shows:

Vedclass Test Series

Exam Paper Generator

Online Exam Module