A Pure Line of Plants of Genotype A/a;b/b;c/c;d/d;e/e (All Recessive

question 17

Multiple Choice

A pure line of plants of genotype a/a;b/b;c/c;d/d;e/e (all recessive to wild type) was crossed to a wild type.One F₁ individual expressed the recessive alleles d and e.This individual arose most likely from:

• A)a deletion in the quadruple homozygous recessive parent.
• B)a deletion in the wild-type parent.
• C)a gene mutation in the wild-type parent.
• D)position effect variegation in the F₁.
• E)a reversion in the quadruple homozygous recessive parent.

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