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Question 51

A pea plant has the genotype Bb. Which gametes can it make for this gene?

  1. Gametes carrying both alleles at once
  2. Only gametes carrying the dominant allele B
  3. Gametes carrying B and gametes carrying bCorrect answer
  4. Only gametes carrying the recessive allele b

Explanation

The two alleles separate as gametes are formed, so each gamete receives one of them and the plant makes the two types in equal proportion. A gamete holding both symbols would double the allele count, leaving the offspring with three alleles of the gene after fertilisation.

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Question 51: A pea plant has the genotype Bb. Which gametes can it make… · Genetics Basics · Questena