In Drosophila, the X-linked recessive mutation vermilion (v) causes bright red eyes, in contrast to the brick-red eyes of wild type. A separate autosomal recessive mutation, suppressor of vermilion (su-v), causes flies homozygous or hemizygous for v to have wildtype eyes. In the absence of vermilion alleles, su-v has no effect on eye color. Determine the F1 and F2 phenotypic ratios from a cross between a female with wild-type alleles at the vermilion locus, but who is homozygous for su-v, with a vermilion male who has wildtype alleles at the su-v locus

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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In Drosophila, the X-linked recessive mutation vermilion (v) causes
bright red eyes, in contrast to the brick-red eyes of wild type. A
separate autosomal recessive mutation, suppressor of vermilion
(su-v), causes flies homozygous or hemizygous for v to have wildtype
eyes. In the absence of vermilion alleles, su-v has no effect on
eye color. Determine the F1 and F2 phenotypic ratios from a cross
between a female with wild-type alleles at the vermilion locus, but
who is homozygous for su-v, with a vermilion male who has wildtype
alleles at the su-v locus

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