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Thamnophis sirtalis garter snakes eat poisonous newts, Taricha granulosa, containing tetrodotoxin. Resistance to tetrodotoxin is highly heritable...

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Biology

Thamnophis sirtalis garter snakes eat poisonous newts,Taricha granulosa, containing tetrodotoxin. Resistance totetrodotoxin is highly heritable in these snakes. Garter snakesmust also escape predators by moving quickly, and crawling speed isalso highly heritable. Selection on both resistance to tetrodotoxinand crawling speed are strong. Nonetheless, neither trait increasesvery much each generation if both are artificially selected in alab population. Explain this result.

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We are disscussing two traits of Thamnophis sirtalis garter snakes 1 Resistance to tetrodotoxin present inTaricha granulosa poisonous newts pray of garter snake This trait is highly heritable 2 High crawling speed necessary to quickly move away from predators This trait is highly heritable Also selection on both traits is strong However in lab population with    See Answer
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