How much of your DNA is identical to that of another person of the same sex?
A) 99.9%
B) 99.5%
C) 90%
D) 78%
B
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When methanogens convert carbon dioxide to methane, it is a(n) ________ reaction.
A. aerobic B. oxidation C. ammonification D. reduction
The ancestors of land plants were probably ________ that lived in ________
A) green algae similar to charophytes; the open ocean B) green algae similar to charophytes; coastal marshes or lake fringes C) cyanobacteria; coastal marshes or lake fringes D) cyanobacteria; moist soil crust communities
Which of the following is most likely to cause genetic changes in a population that make it better adapted to its environment?
A) nonrandom mating B) natural selection C) genetic drift D) gene flow
The long and complex series of events that occurs when a signal binds to the cell surface and is converted from one form to another is called _____.
-signal transduction -transesterification reaction -action potential -signal cross-wiring