Which statement best describes Mendel’s Law of dominance?

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Every trait is controlled by a single factor, and both alleles are equally expressed in the phenotype.

Traits are controlled by discrete units called factors that exist in pairs and in each pair, one factor is dominant and masks the expression of the other factor.

All genetic factors have equal chances of being expressed, and no single trait can dominate over another in the phenotype.

Genetic factors are not paired, but rather occur singularly, determining traits independently without any dominant or recessive interactions.

answer is B.

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Detailed Solution

Law of Dominance :The law of dominance is used to explain the expression of only one of the parental characters in a monohybrid cross in the F1 and the expression of both in the F2 . It also explains the proportion of 3:1 obtained at the F2 .

(i) Characters are controlled by discrete units called factors.

(ii) Factors occur in pairs.

(iii) In a dissimilar pair of factors one member of the pair dominates (dominant) the other (recessive).

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