PATHOLOGY MCQ
GENETICS AND DISEASE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A human disorder caused by a dominant gene is ____
|
|
Tay-Sachs
|
|
|
CF
|
|
|
PKU
|
|
|
Huntington’s
|
Explanation:
Detailed explanation-1: -Huntington’s disease is an autosomal dominant disorder, which means that a person needs only one copy of the nontypical gene to develop the disorder. With the exception of genes on the sex chromosomes, a person inherits two copies of every gene-one copy from each parent.
Detailed explanation-2: -Although anyone can develop HD, it tends to run in people of European descent (having family members who came from Europe). But the main factor is whether you have a parent with HD. If you do, you have a 50% chance of also having the disease.
Detailed explanation-3: -Huntington’s disease is inherited as an autosomal dominant trait.
There is 1 question to complete.