BIOL 2P92 Lecture 1: March 1, 2017
22 Mar 2017
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Document Summary
Its actual location in the clade remains unknown. Model organism for developmental biology because it has a predetermined life cycle. Eutelic number of cells in adult is predetermined (constant) herm has exactly 959 somatic cell nuclei plus. 2000 germ cells, male has 1031 somatic cell nuclei + 1000 germ cells: female germ cells are mostly eggs. One of the first animals to have its genome sequenced: complete wiring diagra(cid:373) of (cid:374)er(cid:448)ous s(cid:455)ste(cid:373) = (cid:862)(cid:272)o(cid:374)(cid:374)e(cid:272)tio(cid:374)s(cid:863, can study its interactions with the environment, and other animals. Parasitic: plants, animals, soil, microbes literally everywhere, and successful. Has a brain, a front end, and a complicated neural network. Has a pharynx (jaw-like apparatuses that help draw food into the digestive system) Live-bearers: worms mate, some have genital pore. Reproduction: male stabs female with sperm in stomach, male leaves sperm on female that causes the cuticle to dissolve and allow sperm to enter the organism and into the uterus.
