[BSC 315] - Final Exam Guide - Everything you need to know! (87 pages long)

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 315
• Professor: Edwin Stephenson

Document Summary

Bb cc dd: for n heterozygous genes, the number of genetically different gametes is 2^n, here n = 4, so 2^4 = 16. Environmental conditions affect phenotype: humans: height, weight, skin color, cancer, siamese cats: foot and face pigmentation (heat sensitive enzyme) Since broadened to one gene, one protein : linkage and gene mapping. F2: 9/16 yellow round, 3/16 yellow wrinkled, 3/16 green round, 1/16 green wrinkled. The former way: f1: yyrr x yyrr. Independent assortment means that each gamete type is produced in equal numbers. F1: yyrr x yyrr (test cross) yr yr. If the dihybrid parent produces equal numbers of each gamete, this is also independent assortment. In a test cross, the progeny phenotypes exactly correspond to gamete types produced by the dihybrid parent. F2: 25% yellow round, 25% yellow wrinkled, 25% green round, 25% green wrinkled. F1 gametes and fertilizations: yr & yr, yr & yr, yr & yr, yr & yr.