The damage caused by ultraviolet radiation is
A) never repaired.
B) repaired during transcription.
C) repaired during translation.
D) cut out and replaced.
E) repaired by DNA replication.
Answer: D) cut out and replaced.
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The underlying phenomenon that makes selective breeding or artificial selection possible is genetic variation. It is possible to have phenotypic variation in natural populations because of....
A. artificial selection. B. gene inversion. C. differences in alleles for a specific trait. D. similarity in alleles for a specific trait. E. both artificial selection and gene inversion.
A polysaccharide that is composed of modified glucose subunits and that is found in the exoskeletons of insects and crustaceans is known as:
A. glycogen B. starch C. amylose D. chitin
Placental mammals that are predacious meat eaters with large and conical-shaped canines are
A. chiroptera. B. proboscidea. C. cetaceans. D. carnivores.
The Greek root words for "branch" and "picture" form the biological term
A. binomial nomenclature. B. taxonomy. C. cladogram. D. systematics. E. phenogram.