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11 BIOL 1001 Mutation Natural Selection (Jan. 30) post-lecture

124 upon what does selec3on act during the killings

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Unformatted text preview: beetles with a lighter shell colour. C.  The bird is making the beetles’ coat colour darker. D.  The bird causes a muta3on that makes the beetles’ coat colour darker. 120 AQer the killings… Before A1A2 A1A2 A2A2 A2A2 A1A2 A2A2 A2A2 A1A1 A2A2 A2A2 A1A1 A1A2 Generation 1 A1A1 A1A1 Still Generation 1 Given random ma3ng, what do you predict you will see in genera3on 2? A.  There will be an increase in the frequency of the A2 allele in the popula3on and more dark coloured beetles. B.  There will be an increase in the frequency of the A1 allele in the popula3on and more light coloured beetles. C.  There will be no change in the popula3on because both alleles are present in the next genera3on. D.  There will be a new muta3on (A3) that will code for a darker beetle shell. 121 Where does change occur? Natural Selec3on Genera3on 2 Genera3on 1 Gene A → colour 2 alleles → A1 and A2 During the killings… Before A1A2 A1A2 A1A2 A1A2 A2A2 A1A1 A2A2 A1A1 A1A2 A1A2 A2A2 A2A2 A1A2 A1A2 A2A2 A2A2 A1A2 A1A1 Genera0on 1 A1A1 A2A2 A1A2 A1A2 A2A2 A2A2 Genera0on 2 Evolu3on: change in the gene3c characteris3cs of a popula3on over 3me b/c change in allele frequencies of a popula3on over 3me 122 A1A2 A1A2 A1A2 A1A2 A2A2 A2A2 A1A2 A1A2 A2A2 A2A2 Genera0on 2 Did the allele frequency change? Calculate the frequency of both alleles in genera3on 2. A.  A1 = 0.6 ; A2 = 0.4 B.  A1 =0.3 ; A2 = 0.7 C.  A1 = 0.5 ; A2 = 0.5 D.  A1 = 0.7 ; A2 = 0.3 E.  A1 = 0.9 ; A2 = 0.1 123 In the beetle popula3on, what are the primary...
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