In Drosophila, an autosomal gene determines the shape of the hair, with B giving straight and b giving bent hairs. On another autosome, there is a gene of which a dominant allele I inhibits hair formation so that the fly is hairless (i has no known phenotypic effect).a. If a straight-haired fly from a pure line is crossed with a fly from a pure-breeding hairless line known to be an inhibited bent genotype, what will the genotypes and phenotypes of the F1 and the F2 be?b. What cross would give the ratio 4 hairless:3 straight:1 bent?
In Drosophila, an autosomal gene determines the shape of the hair, with B giving straight and b giving bent hairs. On another autosome, there is a gene of which a dominant allele I inhibits hair formation so that the fly is hairless (i has no known phenotypic effect).a. If a straight-haired fly from a pure line is crossed with a fly from a pure-breeding hairless line known to be an inhibited bent genotype, what will the genotypes and phenotypes of the F1 and the F2 be?b. What cross would give the ratio 4 hairless:3 straight:1 bent?
Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter20: Chromosomes And Human Genetics
Section: Chapter Questions
Problem 7CT: The following pedigree shows the pattern of inheritance of red-green color blindness in a family....
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In Drosophila, an autosomal gene determines the shape
of the hair, with B giving straight and b giving bent
hairs. On another autosome, there is a gene of which a
dominant allele I inhibits hair formation so that the fly
is hairless (i has no known
a. If a straight-haired fly from a pure line is crossed with
a fly from a pure-breeding hairless line known to be an
inhibited bent genotype, what will the genotypes and
phenotypes of the F1 and the F2 be?
b. What cross would give the ratio 4 hairless:3 straight:1
bent?
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