BIOL 303 Lecture Notes - Lecture 6: Differential Interference Contrast Microscopy, Vulva, Gonad
27 Apr 2016
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S2 nematodes can be found everywhere =very successful and tough to kill. Differential interference contrast microscopy: allows to see diff cellular structures due to diff refractive indexes (solid vs liq). S4 tracking cell nuclei from 1 cell stage. only animal we have complete cell lineage for. Making it very useful for dev biol = anywhere dev goes wrong, can look for what cells are missing (cuz we now every cell that should be there). Each animal is made of same cells, so could look at mutants even b4 all the labling and genetic evln. S6 come in 2 kinds, almost all are hemarphrodites : have sperm and eggs and reproduce by self-fertilazition (no sex, no shuffling of alleles= genetically identical clone of itself). Most of body made of gut and gonad, also has muscles and other cell types. Dnc, vnc: dorsal/ventral nerve cordes (analogous to sc) 1 hermaph can lay 200-300 eggs during its life.
