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Only one form of a trait appears in the first generation out of two forms. This points to which idea?

Answer and explanation

Correct answer: Dominance

In a Mendelian cross, contrasting forms of a trait are represented by different alleles. In a heterozygous first-generation offspring, one allele may mask the expression of the other. The expressed form is called dominant, while the hidden form is recessive. Therefore A, dominance, is correct. Evaporation, excretion and physical balance do not describe allele expression or Mendelian inheritance.

Related tags

DominanceMendelF1 GenerationMendel’s LawsMendel S LawsHeredity And EvolutionScienceClass 10 Mcq

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