A Lizard with a Striped Tail and a Normal Head

question 70

Multiple Choice

A lizard with a striped tail and a normal head is crossed with one having a normal tail and a spotted head. All the F₁ progeny are normal (no stripes or spots) . What progeny are expected from a cross of the F₁ progeny? Assume that the genes conferring stripes and spots were on different chromosomes.

• A) Equal numbers of normal, striped, spotted and striped, and spotted
• B) 3 striped : 1 spotted
• C) 9 striped and spotted : 3 spotted : 3 striped : 1 normal
• D) 9 striped : 3 spotted : 1 striped or spotted
• E) 9 normal : 3 striped : 3 spotted : 1 striped and spotted

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