What is true about a carrier of a recessive disorder?

Question

a
The carrier has two copies of the allele and does not exhibit symptoms
b
The carrier has one copy of the allele and does not exhibit symptoms.
c
The carrier has two copies of the allele and exhibits symptoms.
d
The carrier has one copy of the allele and exhibits symptoms.

Answer 1

The correct answer is:

b The carrier has one copy of the allele and does not exhibit symptoms.

A carrier of a recessive disorder carries one copy of the recessive allele and one copy of the normal (dominant) allele, which means they typically do not exhibit symptoms of the disorder. Symptoms would generally only manifest in individuals who have two copies of the recessive allele.