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Unformatted text preview: Pract Prob Set 2B Bio61 Geoff Lectures 14-19 1. Campbell 7 th chap 16# 3, 4, 5, 6, 7, 8, 9 2. How is polygenic inheritance somewhat the opposite of pleiotropy? 3. The gene for eye color, represented by the alleles G (green) and g (blue), is linked to some degree to the gene for wing shape, represented by the alleles V for v-shape and v for round shape. Assume complete dominance. A green, v-shaped individual is crossed with a blue round shaped individual. The progeny are 40% green and round, 40% blue and v-shaped, 10 % green and v-shaped, and 10% blue and round. Explain these results. —ie how are the alleles arranged on the homologs 4. The disease telephontia is caused by a sex-linked allele of a gene. A man with telephontia and a healthy woman have three daughters, all who have the disease. Explain the result. 5. Female mammals are considered___________ because in some other cells the paternal X is inactivated while in other cells the maternal X is inactivated. 6. Autosomal aneuploidy usually results in serious consequences while sex chromosome aneuploidy carries relatively minor consequences due to ________________, which somewhat corrects for incorrect gene dosage....
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This note was uploaded on 05/01/2008 for the course BIO 61 taught by Professor Geoff during the Spring '08 term at Pacific.
- Spring '08