We are sending a small number of dogs to colonize a new planet. Through a random selection process,
we end up only with dachshunds and chihuahuas. The subsequent colony of dogs are all small with
short legs. This is an example of
a. adaptive radiation.
b. punctuated equilibrium.
c. genetic drift.
d. microevolution.
e. mutation.
C
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Which is not an example of a induced mutational mechanism?
A. DNA replication errors B. Tautomeric shifts of nucleic acid bases C. Aberrant recombination D. UV light E. Transposable elements
A homologous pair of mitotic chromosomes will possess _______ alleles for each locus.
A. 2 B. 4 C. 8 D. 1 E. 50% of the
Which element is a density-dependent factor that controls the size of a population?
a. wind velocity b. light intensity
c. resource availability d. temperature e. wave action in an intertidal zone
If a patient is diagnosed with a peptic ulcer, which genus of Proteobacteria is probably responsible?
a. Desulfovibrio b. Campylobacter c. Myxococcus d. Helicobacter