In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the genotypic ratio in the F2 generation should be closest to

A. 3:1
B. 1:2:1
C. 9:3:3:1
D. 1:1:1:1


Answer: B

Biology & Microbiology

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Fill in the blank(s) with correct word

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