NEET BIOLOGY

GENETICS AND EVOLUTION

INHERITANCE AND VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A trait that mask the expression of another trait.
A
recessive trait
B
heterozygous
C
homozygous
D
dominant trait
Explanation: 

Detailed explanation-1: -Refers to a trait that is expressed only when genotype is homozygous; a trait that tends to be masked by other inherited traits, yet persists in a population among heterozygous genotypes.

Detailed explanation-2: -Individuals inherit two versions of each gene, known as alleles, from each parent. In the case of a dominant trait, only one copy of the dominant allele is required to express the trait. The effect of the other allele (the recessive allele) is masked by the dominant allele.

Detailed explanation-3: -Examples of Dominant Traits Dark hair is dominant over blonde or red hair. Curly hair is dominant over straight hair. Baldness is a dominant trait. Having a widow’s peak (a V-shaped hairline) is dominant over having a straight hairline.

Detailed explanation-4: -Dominant-Traits that appear to mask (or hide) other traits. Recessive-Traits that can be hidden in one generation and then appear in the next. Incomplete dominance-Traits in which the heterozygote shows a different phenotype from the homozygous dominant phenotype.

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