Four eye-color mutants in Drosophila -- apricot, brown, carnation, and purple --
Anonymous

Question Description

CrossParentsF1 Progeny
FemaleMaleFemaleMale
AApricotRedRedApricot
BBrownRedRedRed
CRedPurpleRedRed
DRedApricotRedRed
ECarnationRedRedCarnation
FPurpleRedRedRed
GRedBrownRedRed
HRedCarnationRedRed

Four eye-color mutants in Drosophila -- apricot, brown, carnation, and purple -- are inherited as recessive traits. Red is the dominant wild-type color of fruit-fly eyes. Eight crosses (A to H) are made between parents from pure-breeding lines. The results are shown in the table.

Part A

Which of these eye-color mutants are X-linked recessive?

Check all that apply.

Part B

Which of these eye-color mutants are autosomal recessive?

Check all that apply.

Part C

Predict  phenotype ratios of cross .

Part D

Predict  phenotype ratios of cross .

Part E

Predict  phenotype ratios of cross .

Part F

Predict  phenotype ratios of cross .


Final Answer

MaryB349 (193)
Duke University

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