BIOLOGY 197FH Study Guide - Quiz Guide: Coevolution, Red Queen Hypothesis, Wild Type
24 Mar 2016
School
Department
Course
Professor
Document Summary
Parent is always considered female: bacteria & archeae, plants bulbs, echinoderms (starfish) fragmentation, worms, insects, some sharks/reptiles. Parthenogenesis: growth & development of embryo occurs w/out fertilization. Sexual reproduction: 2 morphologically different gametes fuse to form zygote. 99% of all eukaryotes engage in sexual reproduction. Dioecious = complete male flower or complete female flower on each plant. Monoecious = contains both male and female flowers on same plant. Hermaphroid = individual flower is both male and female. Inbreeding = kinda asexual reproduction because no new genes introduced. As many female offspring assuming 1 male and 1 female. Muller"s ratchet without sex, a population will keep moving away from wild type accumulates slightly harmful mutations many generations can lead to extinction. Allows more combinations of existing alleles w/in population. Persists because when there is invasion and rapid replacement of clonal females, population reaches maximum capacity faster than w/ sexual reproduction. Red queen hypothesis allows organisms to better adapt to changes/introduction of parasites/predators.
