Choose the correct ratio, which shows the masking gene interaction?
A.
12:3:1
B.
9:3:4
C.
1:2:1
D.
9:7
Answer: Option A
Explanation:
Masking gene interaction is also recognized as dominant epistasis. Here, dominant allele of one gene can mask the effect of either allele of the second gene.
Name the phenomenon where two genes have the same expression of the character?
A.
Pleiotropy
B.
Phenocopy
C.
Penetrance
D.
Expressivity
Answer: Option A
Explanation:
Pleiotropy is the condition where either a single gene has multiple functions in the body or two genes have the same expression of the single character.
Name the effect which shows the change in expression of alleles of the gene due to a specific environmental condition?
A.
Pleiotropy
B.
Linkage
C.
Phenocopy
D.
Penetrance
Answer: Option C
Explanation:
It is a type of phenotypic variation where a single trait of an organism is usually changed due to environmental effects. This is not a hereditary effect when environmental conditions removed it goes back to normal.