Question

The HERC2 gene encodes a regulator protein that promotes production of the pigment melanin in the eyes and skin. Which of the following genetic variations would most likely impact HERC2 gene expression specifically in the eye?

a) Point mutation in the skin
b) Insertion in the liver
c) Deletion in the heart
d) Single nucleotide polymorphism in the eye

Answer 1

A single nucleotide polymorphism (SNP) in the eye would most likely impact HERC2 gene expression specifically in the eye.

Step-by-step explanation:

A single nucleotide polymorphism (SNP) in the eye would most likely impact HERC2 gene expression specifically in the eye. SNPs are variations in a single nucleotide base within a DNA sequence. In the case of HERC2, a SNP in the eye could potentially affect the binding of specific transcription factors or other regulatory proteins that control gene expression in the eye, leading to changes in melanin production.