ANT211H5 Lecture Notes - Lecture 3: Red Queen Hypothesis, Parthenogenesis, Sexual Reproduction
Document Summary
Don"t have to know about genetics, mitosis, miosis just know the general concepts on general fitness, reproductive success, natural selection, and the ideas of sexual selections. Learning objectives: be able to explain the disadvantages of sexual reproduction vs. asexual reproduction. Cost of mating: be able to explain the advantages of sexual reproduction vs. asexual reproduction. Sexual selection: depends on the advantage which certain individuals have over other individuals on the same sex and species, in exclusive relation to reproduction. When two sexes differ in structure in relation to different habits of life they have no doubt been modified through natural selection. (darwin 1871) Asexual reproduction: offspring identical to parents (barring mutations) ex: parthenogenesis, development of an unfertilized diploid ovum, sexual reproduction: 50% overlap, on average, between genes of offspring & each parent, advantages over sexual reproduction. No males (whiptail lizards are only females) Haploid (half your genes are passed on) versus diploid (all of your genes are passed on) ovum.
