Organisms that have descended from the same initial group and have the ability to interbreed belong to the same
a. genus.
b. species.
c. class.
d. family.
e. order.
B
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In order to speed up the sterilization process, which of the following would be useful?
A. Drying the material B. Washing/mechanical removal of bacteria/organic matter C. Addition of organics D. Nothing E. Washing/mechanical removal of bacteria/organic matter AND addition of organics
During translation, tRNAs bond to mRNAs using
a. ionic bonds. b. van der Waals forces. c. nonpolar covalent bonds. d. hydrogen bonds. e. polar covalent bonds.
Blood calcium levels will increase under the influence of ________, and decreases under the influence of ______.
Fill in the blank(s) with the appropriate word(s).
Certain small towns in the western United States have remained isolated since their settlement many years ago. Some alleles are more common in these communities as compared to the rest of the US population. This difference is a result of
A. disrupting selection. B. the founder effect. C. directional selection. D. the Hardy-Weinberg principle. E. artificial selection.