PSYC 3100 Lecture Notes - Lecture 12: Uee, Generation A, Body Plan
24 Oct 2016
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Males & females week 6 oct 12. Why is there sex in the first place. How does reproduction work: the paradox of sex forms of reproduction. 2: asexual, asexual divided into 2 daughter cells (clones, sexual, 2 individuals fuse their genomes to create a new individual so what is the fuss about sexual reproduction. If fitness = # of potential copies of genes in next generation. A sexual reproducer has to (cid:862)work t(cid:449)i(cid:272)e as hard(cid:863) si(cid:374)(cid:272)e it o(cid:374)ly tra(cid:374)s(cid:373)it half its ge(cid:374)eti(cid:272) (cid:373)aterial. Since it is costly, it probably has an evolutionary advantage to pay for the cost. Did it evolve to increase variation, a necessary condition for natural selection: may not do so (relationship of phenotype to genotype, even if it does so, variation may not increase fitness. One must run as fast as possible to stay in the same place. In order not to lose any ground compared to their competitors.
