Which of the following is not a correct statement about Huntington’s disease, an autosomal linked dominant trait in human beings?

Correct option is C

Correct Answer: (c)
Explanation:
A person cannot be homozygous for Huntington’s if only one parent is affected, since both alleles must carry the mutant gene.
Hence, (c) is the incorrect statement.
Information Booster:
Huntington’s disease is autosomal dominant.
Caused by CAG repeat expansion in the HTT gene on chromosome 4.
Symptoms: involuntary movements, memory loss, psychiatric changes.
Onset generally between ages 30–50.
Heterozygotes express the disorder; homozygotes are rare and more severely affected.
Additional Information (Incorrect Options):
(a) True — both sexes affected equally.
(b) True — one mutant allele is enough.
(d) True — dominant traits appear in every generation.