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In Mendelian inheritance why does dominant trait not necessarily mean that it is always more useful?

Answer and explanation

Correct answer: Dominance is related to expression, not usefulness

The governing concept is the distinction between genetic dominance and biological advantage. A dominant allele is expressed in the phenotype when present in one copy, whereas a recessive allele may require two copies. Dominance describes expression, not whether a trait improves survival or reproduction. Usefulness depends on the environment and selection. Therefore option A is correct; dominance is not itself natural selection, and recessive traits can appear in suitable genotypes.

Related tags

Dominant-TraitNatural-SelectionInheritanceFood Chain And Food WebOur EnvironmentScienceClass 10 Mcq

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