During the first major divergence of life, the atmosphere was ____
a. high in oxygen, high in carbon dioxide
b. high in hydrogen, low in oxygen
c. changing from anaerobic to aerobic
d. firmly in the age of aerobes
e. high in oxygen, low in carbon dioxide
ANSWER: b
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The inner cell mass, which is formed when the blastula rearranges into two layers, will go on to become what?
a. myometrium b. endometrium c. embryo d. placenta
When gene flow within a population is ended,
it will most likely lead to ____ in the immediate future.
a. new variations b. new species c. gene frequencies d. competition e. reproductive isolation
The last continent to be inhabited by monkeys was:a
South America. b. Africa. c. Europe. d. Asia. e. Antarctica.
How is the timing of gene expression controlled in the lytic cycle?
What will be an ideal response?