ØChemical evolution ended because oxygen
accumulated in the atmosphere, and it caused many organisms who couldn’t take
in oxygen to die
o
This ceased diversity, which caused less
chemical evolution
Ø
Chemical evolution is when an organism adapts to
using a new gas molecule
Ø
2n vs. n
o
2n=diploid
o
n=haploid
Ø
Polyploidy-when the chromosome number is three
or greater
o
Happens in plants
o
If happens in organisms, they usually die
Ø
Eukaryotic vs. Bacterial flagellum
o
Eukaryotic-9+2 array, have different structure,
o
Bacterial-Adhere to surfaces and help with
conjugation
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