A phenomenon known as ________ [one or two words] occurs under conditions where a strong selection pressure acts on a particular change in an amino acid, which results in the corresponding increase in frequency of a closely linked neutral (or even
mildly deleterious) mutation. Fill in the blank(s) with correct word
hitchhiking or selective sweep
You might also like to view...
A biologist develops a new drug that seems to dramatically slow the onset of symptoms resulting from HIV infection
Close monitoring of HIV-infected cells reveals that the viral proteins are in the form of long polyproteins. The biologist most likely developed a _____. A) reverse transcriptase inhibitor B) CD4 inhibitor C) protease inhibitor D) polymerase inhibitor
What basic developmental challenge is solved by the organizer?
A. enhancing migration of cells into the interior of the blastula B. assigning developmental fates to cells along the anterior-posterior axis C. creating an anterior-posterior axis by responding to maternally-deposited protein factors D. creating a dorsal-ventral axis from a spherical ball of cells
New bacterial characteristics are being produced by splicing strands of
A. mRNA. B. carbohydrates. C. tRNA. D. DNA.
Four of the following explain the area effect on island diversity. Which one is the exception?
A. Larger islands have more habitats. B. Smaller islands have more varied and higher elevations. C. Larger islands intercept more colonizers. D. Smaller islands have less complex topography. E. Smaller islands have a greater probability of a species becoming extinct.