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17 Cards in this Set
- Front
- Back
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totipotent
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cells having the ability to become any type of body cell
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3 germ layers and what they'll become
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ectoderm - skin, neurons, meso, muscle, endo - gut
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pleuripotent
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ability of cells of a certain germ layer to become one of many types of cells in that track.
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determined
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cell fate limited to one type
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differentiation
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gene expression that causes the cell to do its unique role
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gastrulation
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rearrangement of the cells to form 3 germ layers
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neurulation
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part of the ectoderm becomes thickened and becomes comitted to forming the N.S.
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Primitive groove
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central furrow in the primitive streak
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Hensen's node
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cluster of cells in groove through which cells pass to become endoderm and mesoderm
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notochord
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induces formation of neural plate
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3 signal/receptor pairs in urchin fertilization
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Resact gradient, Jelly Coat Factor, binding from inside acrosome and fertilizin
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2 blocks to urchin polyspermy
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slow: cortical granules fuse, release enzymes that cleave fertilizin and form fertilization envelope
fast: instant fertilizin binds binding, Na+ channels open, changing membrane potentioal which changes conformation of fertilizin to non binding. |
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"non-disjunction"
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when 2 homologs don't seperate and go to the same daughter cell; results in aneuploidy
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aneuploidy - what is it, when is it fatal?
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missing or extra chromosomes,always fatal except in sex chromosomes and 21 (down's)
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What are the PCR analogs of in vivo dna replication?
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DNA Pol - Taq DNA pol
Primase - Actual Primers Helicase - Heat Nucleotides & ATP - DNTP's |
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What blood type is the universal donor
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O-
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What blood type is the universal acceptor?
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AB+
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