Approximately what percentage of the human genome encodes proteins?
a. 1
b. 3
c. 5
d. 15
e. 50
a
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Punctuated equilibrium proposed by Eldredge and Gould in 1972 is an evolutionary process that involves
A. gradual change observable in the fossil record with very little, if any, stasis. B. "spurts" of change observable in the fossil record followed by periods of stasis. C. gradual change observable in the fossil record followed by periods of stasis. D. "spurts" of change observable in the fossil record with very little if any stasis. E. gradual change observable in the fossil record followed by periods of no change at all.
In animal cells, adhesive glycoproteins such as ________ and ________ attach cells to the matrix.
Fill in the blank(s) with the appropriate word(s).
The structure in the figure above represents a molecule of ____
a. pre-mRNA b. tRNA c. snRNA d. mRNA e. rRNA
Vast __________ form in the interior of midlatitude continents. Fill in the blank(s) with the appropriate word(s)