university of florida bsc2010 biology 1 ch23 slides

May 6th, 2015
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university of florida bsc2010 biology 1 ch23 slides

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BSC 2010 LectureCh. 23Fig. 23-1Fig. 23-2(a)(b)Fig. 23-312.43.145.1867.158.119.1210.1613.1719XX19.102.193.84.1611.12 13.17 15.185.146.7XXFig. 23-40.80.60.4LdhB b allele frequency1.00.204644MaineCold (6C)42403836Latitude (N)343230GeorgiaWarm (21C)Porcupineherd rangeFortymileherd rangeFortymile herdTESHW IESRT ORNO RRITTEBeaufort SeaMAPAREACANADAALASKAPorcupine herdALASKAYUKONFig. 23-5N = 1000 diploid organismsHow many alleles?N = 1000 diploid organismsHow many alleles?2000p = frequency of r alleleq = frequency of R allele40 are homozygous recessive (rr). How can wefigure out how many Rr and RR individuals arein the population?N = 1000 diploid organismsHow many alleles?2000p = frequency of r alleleq = frequency of R allele40 are homozygous recessive (rr). How can wefigure out how many Rr and RR individuals arein the population?q2 = genotypic frequency of RR2pq = genotypic frequency of Rrp2 = genotypic frequency of rrWhat causes allele frequencies to change?In other words, what causes a populationto NOT be in HWE for a particular gene?A.B.C.D.E.Natural selectionGenetic drifGene flowMutationPreferential matingNatural Selection Differential success in reproduction results incertain alleles being passed to the next generationin greater proportionsFig. 23-8-3CWCWCRCRCRCRCRCWCR

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