In the fruit fly Drosophila, a rudimentary wing called vestigial and the dark body color called ebony are inherited at independent loci and are recessive to their dominant wild type counterparts, full wing and gray body color. Dihybrid males and females displaying both wild type phenotypes are crossed, and 3200 progeny are produced. How many progeny flies are expected in each of the phenotypic classes produced?

In the fruit fly Drosophila, a rudimentary wing called vestigial and the dark body color called ebony are inherited at independent loci and are recessive to their dominant wild type counterparts, full wing and gray body color. Dihybrid males and females displaying both wild type phenotypes are crossed, and 3200 progeny are produced. How many progeny flies are expected in each of the phenotypic classes produced?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter13: Genes, Chromosomes, And Human Genetics

Section: Chapter Questions

Problem 8TYK: Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene...

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Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene produces long wings; a recessive allele produces vestigial (short) wings. A female that is true- breeding for red eyes and long wings is mated with a male that has purple eyes and vestigial wings. F1 females are then crossed with purple-eyed, vestigial-winged males. From this second cross, a total of 600 offspring are obtained with the following combinations of traits: 252 with red eyes and long wings 276 with purple eyes and vestigial wings 42 with red eyes and vestigial wings 30 with purple eyes and long wings Are the genes linked, unlinked, or sex-linked? If they are linked, how many map units separate them on the chromosome?
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