Which of the following plants are among those
that contributed to the formation of coal?
a. horsetails
b. peat mosses
c. conifers
d. angiosperm trees
e. more than one of these
A
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If a given protein’s level peaks early in G1, but is absent before the G2 transition, what can be inferred about its possible role in regulating the cell cycle?
a. This protein inhibits Cdk1. b. This protein activates Cdk1. c. This protein inhibits Cdk2. d. This protein activates Cdk2. e. This proteins is involved in DNA synthesis.
If a small population of mice colonizes a new area away from the range of the original species, the
colony that is geographically isolated may eventually evolve into a new species. These events can be used to describe:a. allopatric speciation. b. hybridization. c. allopolyploidy. d. adaptive radiation. e. sympatric speciation.
A eukaryotic gene that is regulated by three activator proteins is said to be under
A. individual control. B. combinatorial control. C. self-regulation. D. elastic control. E. triplet regulation.
The codon that signals the end of a growing polypeptide is called initiator code
a. true b. false