In his book The Origin of Species, Darwin argued that species living today descended from a succession of ancestral species. What mechanism did Darwin propose to explain how evolution occurs?

A. competition
B. natural selection
C. artificial selection
D. overproduction


B. natural selection

Biology & Microbiology

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Animals that lack CXCR4 and CCR5 proteins are immune to HIV infection

Indicate whether the statement is true or false.

Biology & Microbiology

Of the stages of translation, which one is basically the same in both eukaryotes and prokaryotes?

a. initiation b. termination c. translation d. elongation

Biology & Microbiology

Chorionic villus sampling (CVS) is sometimes preferred to amniocentesis because results can be provided earlier in the pregnancy

Indicate whether the statement is true or false

Biology & Microbiology

During the fermentation of one molecule of glucose, the net production of ATP is

A) six molecules. B) one molecule. C) three molecules. D) two molecules. E) eight molecules.

Biology & Microbiology