Hey its Jessie.
In class today we reviewed the blog post from yesterday (homologous structures, analogous structures, vestigial stractures, comparative embryology and molecular biology) and talked about GENETIC VARIATION, GENETIC DRIFT and SPECIATION.
GENETIC VARIATION:
-the change in frequency of allels due to natural selection
GENETIC DRIFT:
-the change in gene pools of a small population due to change(wind blew them away, fire, hurricane,ect....)
SPECIATION:
-when species develope into new species (NEEDED- reproductive isolation)
we also measured the legs of dead grasshopers, YUCK! and compleated a lab.
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