Term for Masking of Non-Allelic Gene Expression
When one gene masks the expression of another non-allelic gene, it is known as:
- Dominance
- Epistasis — Correct Answer
- Pleiotropy
- Incomplete dominance
Explanation:
Correct Answer: Epistasis
Epistasis is the phenomenon where one gene masks the expression of another non-allelic gene. It is a type of non-allelic (intergenic) interaction.
Types of Epistasis and their Fâ Ratios
| Type | Fâ Ratio |
|---|---|
| Dominant epistasis | 12:3:1 |
| Recessive epistasis (Supplementary gene action) | 9:3:4 |
| Complementary gene action | 9:7 |
| Duplicate gene action | 15:1 |
| Inhibitory gene action | 13:3 |
Note: Dominance is allelic (intragenic) interaction; Epistasis is non-allelic (intergenic) interaction.
đ About this Topic â Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
