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Unformatted text preview: these mutants to wild type cells and sporulates them to get haploid cells. He notices that his mutants actually fit into two different categories according to their haploid progeny. Describe a model that would explain the differences between these two groups. (1) Prototroph X wild type: all progeny are prototrophic (2) Prototroph X wild type: 75% are prototrophic, 25% require adenine 3. The production in eye color in Drosophila requires the dominant allele A . The dominant allele P of a second independent gene turns the pigment to purple, but its recessive allele leaves it red. A fly producing no pigment has white eyes. Two pure lines were crossed with the following results. Explain the mode of inheritance and show the genotypes of the F 1 and F 2 generation. P red-eyed Female X white eyed Male F 1 purpled-eyed Females and red-eyed Males F 1 X F 1 Both Males and Females: 3/8 purpled-eyed 3/8 red-eyed 2/8 white-eyed...
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- Spring '09