How Would One Explain a Testcross Involving F₁ Dihybrid Flies

question 42

Multiple Choice

How would one explain a testcross involving F₁ dihybrid flies in which more parental-type offspring than recombinant-type offspring are produced?

• A)The two genes are linked.
• B)The two genes are linked but on different chromosomes.
• C)Recombination did not occur in the cell during meiosis.
• D)The testcross was improperly performed.
• E)Both of the characters are controlled by more than one gene.

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