Exam2_2013KEY_FINAL_new_PDF

7 given the dna sequences as codons and their amino

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Unformatted text preview:  ­0.5*0.67 W = 1 ­0.335 W = 0.67 6d. What is delta p (change in p) from one generation to the next (3 points)? delta p = p’ ­ p delta p = 0.67 ­0.5 delta p = 0.17 6e. What is the frequency of a in the next generation of gametes (3 points)? q’=1 ­p’ = 1 ­0.67 = 0.33 6f. Has natural selection occurred? Why or why not (4 points)? Yes, natural selection has occurred because there is differential survival/reproduction of some genotypes over others. 6g. Has evolution occurred? Why or why not (4 points)? Yes, evolution has happened since the allele frequencies changed in one generation. 6h. Has evolution by natural selection occurred? Why or why not (4 points)? 5 ECOL 335 Evolutionary Biology NAME_____KEY________________ Sect#_____ Exam 2 Spring 2013 March 6, 2012 Yes, evolution by natural selection has occurred because allele frequencies changed as a result of differential survival/reproduction. 7. Given the DNA sequences (as codons) and their amino acid translations below fill out the information in 5a ­5c: Human  ­1 atg acc cac gat tct Met Thr His Asp Ser acc cat gat Met Thr His Asp Ser acc cat gat Met Thr His Asp Ser tta tct tgg gta cgt cga gac Leu Ser Trp Val Arg Arg Asp tta tgg gtg cgt cga gac Leu Ser Trp Val Arg Arg Asp tta tgg gtg cgt cga gac Leu Ser Trp Val Arg Arg Asp tta tgc gtg cat cga gac Leu Leu Cys Val His Arg Asp Human ­2 atg tct tct Human ­3 atg tca tct Common Chimpanzee ­1 atg aca cgt gat aca Met Thr Arg Asp Thr tta 7a...
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