BIOL 112 Study Guide - Gargoyle, Griffin, Centimorgan

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 112
• Professor: Joseph Dent

Document Summary

Disclaimer on gonzo genetics problems: these problems are designed to help you think about genetic mechanisms. They are much more difficult than anything you will find on the exam (well, maybe one exam question will be this difficult). Don"t panic if you find them challenging: the moss megaspora is a haploid adult which produces a diploid sporophyte (formed by the fusion of two gametes). It has a single gene for height with a tall allele (t) and a short allele (t). It also has a single gene for leaf color with a green allele (g) and a red allele (g). The leaf color and height genes are linked with a map distance of 25cm. You cross a tall red megaspore to a short green. In the exact middle of chromosome i is the gene (clr) for color with a dominant opaque allele (c) and a recessive clear allele (c).