PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When there is incomplete dominance, ____
A
One allele has more influence than the others
B
Each allele has its own degree of influence.
C
The alleles have no influence
D
There are no alleles present
Explanation: 

Detailed explanation-1: -Incomplete dominance, also called partial dominance, semi-dominance, or intermediate inheritance, involves the formation of third phenotypic traits due to the combination of parents’ alleles.

Detailed explanation-2: -Incomplete dominance is a form of Gene interaction in which both alleles of a gene at a locus are partially expressed, often resulting in an intermediate or different phenotype. It is also known as partial dominance. For eg., in roses, the allele for red colour is dominant over the allele for white colour.

Detailed explanation-3: -Incomplete dominance results from a cross in which each parental contribution is genetically unique and gives rise to progeny whose phenotype is intermediate. Incomplete dominance is also referred to as semi-dominance and partial dominance.

Detailed explanation-4: -C: Incomplete dominance is a pattern of inheritance in which both alleles are present resulting in an intermediate phenotype. This statement is also true because it describes the blending of phenotypes that occurs in incomplete dominance. D: When none of the factors of a gene is dominant.

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