BIO 479 Lecture Notes - Lecture 11: Anisogamy, Plant Reproductive Morphology, Genetic Recombination

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Friday, february (cid:401)(cid:402), (cid:401)(cid:399)(cid:400)8 8:58 am: sexual reproduction two sexes as a result of sexual differentiation. Meiosis that leads to: anisogamous haploid gametes, genetic recombination, asexual reproduction one "sex", no sexual difference. No meiosis results in: no fertilization of haploid gametes, no/little genetic recombination, inverts = most are two sexes but may be one sex. Can breed sexually with themselves or with others: verts = most but not all are diecious. Breed sexually with other individuals: dioecies life: development of sexes from the "indifferent gonad" (cid:336)mammalian model(cid:337) Indifferent gonad not determined whether female or male yet. Rule: genetic sex determines inherited material > gonadal sex, gonadal sex determines the phenotypic sex, phenotypic sex how your expressed (cid:336)this rule can be broken(cid:337)