lalamoregeneticsyum

lalamoregeneticsyum - 5) 15.2, 15.3 (274-281, 283-284) A....

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5) 15.2, 15.3 (274-281, 283-284) A. Discuss the experimental evidence that led to the discovery, in the lab of Thomas H. Morgan, of the first gene to be identified with a particular chromosome and his evidence of gene linkage. B. Explain how the behavior of chromosomes during meiosis can lead to recombination of unlinked genes and of linked genes. C. Distinguish between a genetic map and a linkage map of a chromosome . Explain why the farther apart two genes are, the higher the recombination frequency would be. D. Discuss how data concerning the inheritance of two traits can be used to determine whether the genes are linked or not, and if linked, how many map units apart they are on the chromosome. E. Describe the inheritance of a sex-linked gene such as color-blindness. Why is a recessive sex- linked gene always expressed in human males? A) Morgan’s Lab with Black Body and Wings -Black Body = b -Grey Body = b + -Normal Wings = vg+ -Vestigial Wings = vg -First he bred two true breeding flies, who were each homozygous in both traits b + b + vg + vg + x bbvgvg b + vg + b + vg + bvg b + bvg + vg b + bvg
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lalamoregeneticsyum - 5) 15.2, 15.3 (274-281, 283-284) A....

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