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%
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
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.