ANTH 1001 Notes 2-7

ANTH 1001 Notes 2-7 - Thursday, Feb. 7- ANTH NOTES Feb. 21:...

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Thursday, Feb. 7-- ANTH NOTES Feb. 21: Test 1; looking for exam review Feb. 20 somewhere between 4:30 and 6:00; Broadcast Email Message on SemesterBook closer to test. In sections with *, * is what I actually need to know Genotype and Phenotype B. Categorization of phenotypes 1. Discontinuous variation -there are only a few phenotypic variants w/in that group; controlled by a single gene 2. Continuous variation -great variety of phenotypes; if we graph trait (x) vs. #(y), you’ll see a bell curve a) Traits showing continuous variation are typically polygenic (trait influenced by multiple genes interacting together) ex. Diet as kid, illnesses as kid, etc. influence your adult stature…environment plays more of a factor in polygenic C. Formula for Determining Number of Genotypes 1. Number of genotypes= [{(a)(a+1)} /2]^G (Know how to manipulate mathematically) A= # of alleles of gene; G= # of genes Ex// Seed texture: R,w; a=2, G=1, sooo. .. 3 types (RR,ww,Rw) Ex// a=2; G=10 then 59,049… underlying phenotypic variation, there’s a
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ANTH 1001 Notes 2-7 - Thursday, Feb. 7- ANTH NOTES Feb. 21:...

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