BIO220H1 Lecture Notes - Lecture 22: Mutation, Rare Disease, Mayfly
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BIO220H1 Full Course Notes
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This is george du(cid:374)at (cid:449)ho (cid:449)orked o(cid:374) ful(cid:373)ars. I(cid:374) (cid:271)oth ptohots, it"s the sa(cid:373)e (cid:271)ird, a(cid:374)d the (cid:271)ird has(cid:374)"t vididly aged, but george has. This albatross is 66 years old and she layed an egg. This ornithologist placed a band around wisdoms ancle, and a few leays later he replaces the band. Mayflies live as adults for 1 day, they mate and lay eggs in just one day. A hydra is related to jellyfish, and they can live 1400 years, and they are continuously reproducing over these 1400 years. This degeneration leads to reduction in survival ad fertility. We do(cid:374)"t k(cid:374)o(cid:449) (cid:449)hy e(cid:448)olutio(cid:374) has(cid:374)"t fou(cid:374)d a (cid:449)ay arou(cid:374)d this. Doing dna repair keeps us living for longer, but we have to spend energy doing this, and it takes away from the energy we can use for fitness and fecundity. We can test this tradeoff by testing the repructive effort of organisms.
