Which of the following groups arose during the Cambrian explosion?
a. protists
b. bacteria
c. arthropods
d. plants
c. arthropods
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All of the following kinds of plants have at least some members that are vascular plants EXCEPT:
A. spermatophytes B. lignophytes C. tracheophytes D. bryophytes E. embryophytes
Which group of organisms will contain a nucleus?
a. Archaea b. All contain a nucleus c. Bacteria d. None contain a nucleus. e. Eukaryotes
In the preovulatory phase of the menstrual cycle, FSH stimulates a few follicles to develop
Indicate whether the statement is true or false.
A population has a size of 10,000 individuals, and only 5% of the males successfully mate in any generation. Its response to drift would depend on:
a. the effective population size. b. the population size. c. the strength of drift. d. the strength of selection. e. the inbreeding coefficient.