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Question 5. A male Drosophila homozygous for three recessive autosomal alleles a, b and c is mated to a female homozygous for the dominant alleles A, B and C. F1 females are then backcrossed to the homozygous recessive parental male and the following results were observed in F2: Phenotype Number abc 211 ABC 209 aBc 212 AbC 208 (a) Which of these genes are linked? A. A and B B. A and C C. B and C D. A, B, and C E. None of these genes are linked.

          Question 5. A male Drosophila homozygous for three recessive autosomal alleles a, b and c is mated to a female homozygous for the dominant alleles A, B and C. F1 females are then backcrossed to the homozygous recessive parental male and the following results were observed in F2:

Phenotype Number
abc 211
ABC 209
aBc 212
AbC 208

(a) Which of these genes are linked?
A. A and B
B. A and C
C. B and C
D. A, B, and C
E. None of these genes are linked.

Question 5. A male Drosophila homozygous for three recessive autosomal alleles a, b and c is mated to a female homozygous for the dominant alleles A, B and C. F1 females are then backcrossed to the homozygous recessive parental male and the following results were observed in F2:

Phenotype Number
abc 211
ABC 209
aBc 212
AbC 208

(a) Which of these genes are linked?
A. A and B
B. A and C
C. B and C
D. A, B, and C
E. None of these genes are linked.

Added by Kevin Y.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Mauya Mitchell

06/08/2024

Step 1

The given phenotypes and their numbers in F2 are: - abc: 211 - ABC: 209 - aBc: 212 - AbC: 208 Show more…

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Question 5: A male Drosophila homozygous for three recessive autosomal alleles a, b and c is mated to a female homozygous for the dominant alleles A, B and C. F1 females are then backcrossed to the homozygous recessive parental male and the following results were observed in F2: Phenotype Number abc 211 ABC 209 aBc 212 AbC 208 (a) Which of these genes are linked? A. A and B B. A and C C. B and C D. A, B, and C E. None of these genes are linked.