2. Mendel's Laws of Inheritance
Sex-Linked Genes
5:18 minutes
Problem 12a
Textbook Question
Textbook QuestionOn the Drosophila X chromosome, the dominant allele y⁺ produces gray body color and the recessive allele y produces yellow body. This gene is linked to one controlling full eye shape by a dominant allele lz⁺ and lozenge eye shape with a recessive allele lz. These genes recombine with a frequency of approximately 28%. The Lz gene is linked to gene F controlling bristle form, where the dominant phenotype is long bristles and the recessive one is forked bristles. The Lz and F genes recombine with a frequency of approximately 32%.
Can any cross reveal genetic linkage between gene Y and gene F? Why or why not?
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