A maternal effect gene in Drosophila, called torso, is found as afunctional allele (torso+) and a nonfunctional, recessive allele(torso−) that prevents the correct development of anterior- andposterior-most structures. A wild-type male (torso+ torso+) is crossedto a female of unknown genotype. This mating produces 100% larvathat are missing their anterior- and posterior-most structures andtherefore die during early development. What is the genotype andphenotype of the female fly in this cross? What are the genotypesand phenotypes of the female fly’s parents?
A maternal effect gene in Drosophila, called torso, is found as a
functional allele (torso+) and a nonfunctional, recessive allele
(torso−) that prevents the correct development of anterior- and
posterior-most structures. A wild-type male (torso+ torso+) is crossed
to a female of unknown genotype. This mating produces 100% larva
that are missing their anterior- and posterior-most structures and
therefore die during early development. What is the genotype and
phenotype of the female fly in this cross? What are the genotypes
and
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A maternal effect gene in Drosophila, called torso, is found as a recessive allele that prevents the correct development of anterior- and posterior-most structures. A wild-type (homozygous) male is crossed to a female of unknown genotype. This mating produces 100% larva that are missing their anterior- and posterior-most structures and therefore die during early development. What is the genotype and phenotype of the female fly in this cross? What are the genotypes and
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