All of the following are mechanisms or adaptations of organisms to the arrival of colder
winter temperatures EXCEPT
a. hibernation.
b. reduction in metabolic rates.
c. migration.
d. growth.
D
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You have an F2 generation derived from two true-breeding parents with different characteristics for the same trait determined by a single allele
What percentage of the F2 generation with a dominant phenotype would you expect to be homozygous for your single allele of interest? A. 0% B. 25% C. 33% D. 67% E. 75% F. 100%
Courts allow patenting complementary DNA (cDNA) because
A) its exact sequence is not in the genome of an organism. B) it cannot be synthesized in a laboratory. C) it is present only in adult humans. D) it represents only the introns of a gene.
Osteoporosis sometimes results from
a. excessive PTH secretion. b. insufficient PTH secretion. c. excessive intake of vitamin D. d. excessive intake of iodine. e. insufficient intake of vitamin D.
The presence of wings in butterflies, moths, bats, and birds is an example of _______.
A. Homology B. Homoplasy C. An ancestral trait D. A synapomorphy