LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

GENETICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark’s phenotype?

A	Brown Hair
B	Blonde Hair
C	Brown and Blonde Hair
D	Black Hair

Explanation:

Detailed explanation-1: -An individual that contains two different alleles of a gene is heterozygous. Examples. A cow that has two alleles for a red coat is homozygous (bb). A bull with two alleles for a black coat is homozygous (BB). A calf that has one allele for red coat color and one allele for black coat color is heterozygous (Bb).

Detailed explanation-2: -Hair color is a genetic and physiologically complex phenotype, which represents one of the most visible variations within humans and between populations [1].

Detailed explanation-3: -Phenotype refers to an individual’s observable traits, such as height, eye color and blood type. A person’s phenotype is determined by both their genomic makeup (genotype) and environmental factors.

There is 1 question to complete.