All human beings share approximately ________% of their DNA with the rest of the human population
a. 58
b. 1
c. 99
d. 75
e. 33
c
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What was the most important adaptation of the reptiles and birds to life on land?
A. the shelled egg B. the amniotic egg C. the external egg D. the impermeable egg
The organism shown above is using which of
the following types of reproduction? a. asexual budding b. sexual production of eggs c. hermaphroditic co-fertilization d. a combination of all three e. none of these
What was a significant outcome of the Miller and Urey experiment?
a. They demonstrated natural selection. b. They were the first to synthesize living cells. c. They proved that life did not originate on Earth. d. They proved that the iron-sulfur world hypothesis was false. e. They synthesized organic molecules from inorganic materials.
Action potentials relay different intensities of information due to the
A) amplitude of action potentials relative to the strength of the stimulus. B) frequency of action potentials relative to the strength of the stimulus. C) duration of action potentials relative to the strength of the stimulus.