The bottleneck effect, when a population is suddenly reduced, can lead to genetic drift. Which of the following is least likely to result in the bottleneck effect in a population?
A) flood
B) habitat destruction
C) predation
D) immigration
Ans: D) immigration
Biology & Microbiology
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Genetic drift is the _____ in allele frequencies from generation to generation and is especially important in _____ populations
A. random change; small B. random change; large C. change due to selection; small D. change due to selection; large E. none of these
Biology & Microbiology
__________ selection leads to forms of traits that enhance reproductive success and may result in sexual dimorphism.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
GI stretch is a shortterm regulator of food intake.
a. true b. false
Biology & Microbiology
Archaea are cellular organisms that have unique cell membrane ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology