For which two species concepts are anatomical features the primary criterion for determining species identities?
1. biological
2. ecological
3. morphological
4. phylogenetic
5. paleontological
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 3 and 5
E) 4 and 5
Answer: A) 1 and 2
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a. nekton. b. phytoplankton. c. zooplankton. d. benthos. e. profundal microorganisms.
Why is oxygen toxic to strict anaerobes?
What will be an ideal response?
Which of the following is incorrectly paired?
A) sexual selection: mating based on phenotype B) bottleneck effect: changes in allele frequencies due to chance events C) gene flow: genes move from one population to another D) founder effect: only a small portion of an original population's gene pool are represented
_____ studies how disease originates and spreads throughout a population, with the goal of preventing outbreaks and containing them when they do occur.
Fill in the blank(s) with the appropriate word(s).