A change in gene frequency within a population over time is called
Fill in the blank(s) with the appropriate word(s)
Answer: microevolution
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As radiation strikes molecules in cells, it creates ____
a. charged atoms called isotopes b. charged atoms called ions c. excess storage of tRNA d. excess copies of mRNA e. excess DNA polymerase
In a partially mixed estuary the salinity
a. is extremely variable from place to place. b. is stratified with lower salinity near the bottom. c. is lower than the ocean but relatively homogenous. d. increases with depth.
Development of both the ovaries and testes are influenced by
A. progesterone. B. estrogens. C. follicle-stimulating hormone. D. oxytocin.
Which of the following environments or actions would NOT affect the rate of an enzyme reaction
a. substrate concentration b. heating the enzyme c. pH d. cooling the enzyme e. None of the listed responses is correct