Which classification includes animals that eat only meat?
a. herbivore
b. carnivore
c. omnivore
d. decomposer
e. photosynthetic organism
ANSWER: b
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If a new allele appears in a population, the Hardy–Weinberg formula
(a) cannot be used because no equilibrium exists. (b) can be used but only for two alleles at a time. (c) can be used by lumping all but two phenotypes in one class. (d) can be expanded by adding more terms.
Why is it necessary to obtain overlapping sequences when sequencing a genome for the first time?
A) To assemble the whole genome sequence virtually from random fragments B) To quantify the amount of DNA in the genome C) To make sure all the clones in a library are used D) To allow for sequencing errors to be corrected
In Griffith's experiments,
A. mice infected with heat-killed virulent bacteria and live nonvirulent bacteria developed pneumonia and died. B. nonvirulent bacteria transformed the virulent bacteria into a nonvirulent variety. C. mice infected with heat-killed virulent bacteria and heat-killed nonvirulent bacteria developed pneumonia and died. D. mice infected with live nonvirulent bacteria developed pneumonia and died.
Chromatids are
A) identical until crossing over occurs. B) attached at their centromeres and are identical until crossing over occurs. C) a pair of chromosomes, one from the mother and one from the father. D) attached at their centromeres. E) attached at the centriole.