Asked by Avery Braswell on May 06, 2024
Verified
In the determination of eye color, the HERC2 gene overrides the instructions of the OCA2 gene. If individuals are homozygous for a recessive allele of HERC2, they will have blue eyes regardless of the genotype associated with OCA2. This is an example of
A) epistatic interactions.
B) a two-trait cross.
C) incomplete dominance.
D) codominance.
E) homologous chromosomes.
HERC2
A gene associated with the regulation of several proteins, notably impacting pigmentation and neurological functions.
Epistatic Interactions
Genetic interactions where the effect of one gene is modified by one or several other genes, which can mask or suppress the expression of the first gene.
OCA2
OCA2 refers to a gene related to pigmentation in humans, mutations of which can lead to type 2 albinism.
- Highlight the variances between incomplete dominance, codominance, epistasis, and polygenic inheritance.
- Understand the impact of epistatic interactions on genetic results.
Verified Answer
AC
Andrew CrossMay 06, 2024
Final Answer :
A
Explanation :
This is an example of epistatic interactions, where one gene overrides the effects of another gene. The HERC2 gene is epistatic to the OCA2 gene in determining eye color.
Learning Objectives
- Highlight the variances between incomplete dominance, codominance, epistasis, and polygenic inheritance.
- Understand the impact of epistatic interactions on genetic results.