Question

People sometimes suggest that certain traits “skip a generation.” Which of the following is the best biological explanation for this saying?

A		A parent with two dominant alleles occasionally does not pass on an allele.
B		A recessive trait is sometimes masked in the F1 generation but reappears in the F2 generation. This is because of the law of segregation.
C		The law of independent assortment means that certain traits can be masked by a dominant allele but be phenotypically visible subsequent generations.
D		Recessive alleles are likely to mask dominant alleles, resulting in skipping of generations.

Answer 1

Option B

First and third options are incorrect because dominant allele can never be masked by the presence of recessive alleles and therefore can never skip generations.

Fourth option is incorrect because recessive allele cannot mask the effect of dominant allele.

Second option is correct because it rightly explain that recessive allele is hidden in first generation but reappears in second generation.

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