Biology 1001A Lecture Notes - Lecture 16: Populus Tremuloides, Amphiprioninae, Sequential Hermaphroditism
9 Apr 2016
School
Department
Course
Professor
Document Summary
Sexual recombinaion in meiosis --> geneic diversity: crossing over, independent assortment, results in disinct ofspring from either parent and usually each other. Sex does not mean reproducion: you can have sex without reproducing and reproduce without having sex. Asexual reproducion: binary ission --> reproducion without sex, pseudosex in bacteria --> sex without reproducion bridge created between two bacteria and geneic informaion is exchanged, certain mulicelluar organisms can reproduce either sexually or asexually. Quaking aspen sexual reproducion through lowers/pollen asexual reproducion via vegetaive propagaion sending runners through the ground and creaing clones --> colonies: facultaively sexual --> reproduce both asexually and sexually. Sexually reproducion organisms may be dioecious or monoecious: dioecious --> gender is speciic and well deined. Males house one form of gamete (sperm) ; females house another (egg) eg. humans / plants (although rare: monoecious --> gender is not speciic or well deined. Male and female gametes are housed in one organism (hermaphrodiic) eg. roses, sea slugs.
