The first group to exhibit an amniotic egg was the ____
a. cartilaginous fish
b. amphibians
c. reptiles
d. bony fish
e. mammals
c
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DNA replication always proceeds by adding new bases to the _______ end of an existing strand.
A. 1' B. 2' C. 3' D. 4' E. 5'
The carrying capacity of a given geographic region for a single population can change over time
Indicate whether the statement is true or false
Temporal gene regulation refers to which of the following circumstances?
a. Certain genes are induced only at a particular point in the organism’s life cycle. b. Certain genes are induced only in specific tissues. c. Heat-shock genes are induced during periods of temperature stress. d. "Housekeeping" genes are induced in response to a viral infection. e. Molecular chaperones are synthesized after heavy-metal ingestion.
The moose population on Isle Royale is an example of:
a. interspecific exploitation competition. b. intraspecific exploitation competition. c. interspecific contest competition. d. intraspecific contest competition. e. both intraspecific contest competition and scramble competition.