Retroviruses make ____ by the process of ____
a. RNA copies of DNA; reverse transcription
b. DNA copies of RNA; reverse transcription
c. genetic probes; Southern blotting
d. genetic probes; Northern blotting
e. telomerase; mutagenesis
b
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Small pox
a. kills up to a third of all people it infects. b. kills over half of all people it infects. c. is only found in subtropical climates. d. was eradicated by 1850. e. is not described by any of these.
Non-flowing water bodies, such as lakes, are referred to as lotic ecosystems
Indicate whether the statement is true or false
Natural selection generally results in ________
A) increased genetic variation B) a population that is better adapted to a future environment C) a population that is adapted to its current environment D) an increase in the size of a population
The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are
A. water soluble. B. highly polar. C. non-polar. D. positively charged. E. negatively charged.