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Evolution__3rd_Edition

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Figure 2.11<br />

Two populations with 10<br />

individuals each (real<br />

populations would have many<br />

more members), one with<br />

blending heredity and the<br />

other with Mendelian heredity.<br />

(a) Under blending heredity, a<br />

rare new advantageous gene is<br />

soon blended away. (b) Under<br />

Mendelian heredity, a rare new<br />

favorable gene can increase in<br />

frequency and eventually<br />

become established in the<br />

population. See text for<br />

explanation.<br />

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(a) Blending heredity (b) Mendelian heredity<br />

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Many generations Many generations<br />

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..

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