You cross a female rat with pink toe pads (T) and pointy ears (X^e) to a male rat with black toe pads (t) and round ears (X^E). The t and e alleles are both recessive, and the ear-shaped gene is X linked, whereas the toe pad color gene is autosomal. The F₁ progeny all have pink toe pads. What is the genotype of parental generation? What is the genotype of the F₁ progeny? If the F₁ are crossed to produce F₂ progeny, what proportion of the F₂ will be black-padded, pointy-eared males?

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The Answer of You cross a female rat with pink toe pads (T) and pointy ears (X^e) to a male rat with black toe pads (t) and round ears (X^E). The t and e alleles are both recessive, and the ear-shaped gene is X linked, whereas the toe pad color gene is autosomal. The F₁ progeny all have pink toe pads. What is the genotype of parental generation? What is the genotype of the F₁ progeny? If the F₁ are crossed to produce F₂ progeny, what proportion of the F₂ will be black-padded, pointy-eared males?

You Cross a Female Rat with Pink Toe Pads (T)