BIOL359 Lecture Notes - Lecture 1: Inbreeding, Sexual Selection
2 Apr 2018
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Sometimes sex is more important than life itself (ex. Species that gives rise only to females, no sex, no contribution from male. 40% infected by a parasite that causes black spot disease. Asexual reproducers have more parasites than sexual producers. They live side by side and are exposed to the same parasites. No, it"s a (cid:272)o(cid:374)sta(cid:374)t ra(cid:272)e. ru(cid:374) as fast as (cid:449)e (cid:272)a(cid:374) to stay i(cid:374) the sa(cid:373)e pla(cid:272)e. Is a species stops evolving its doomed, the asexual producers have stopped evolving. Sexual selection slows down the transmission of the parasites. Any trait that increases the rate of survival should spread rapidly through the population. Female should be more choosy invest more time and energy into offspring. Males expend little energy therefore should be less choosy. Paired females with males with short tails offspri(cid:374)g do(cid:374)"t sur(cid:448)i(cid:448)e as (cid:449)ell. Looked at peacocks to fe(cid:373)ales size (cid:373)attered.
