Ultraviolet Light Causes Pyrimidine Dimers to Form in DNA

question 45

Multiple Choice

Ultraviolet light causes pyrimidine dimers to form in DNA. Some individuals are genetically incapable of repairing some dimers at "normal" rates. Such individuals are likely to suffer from
________.

• A) Huntington Disease
• B) muscular dystrophy
• C) xeroderma pigmentosum
• D) phenylketonuria
• E) SCID

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Definitions:

Hybridization

(1) Interbreeding between members of two different taxa. (2) Interbreeding between genetically dissimilar parents. (3) In molecular biology, complementary base pairing between nucleic acid (DNA or RNA) strands from different sources.

Plant Evolution

The study of the processes that led to the diversity of the plant kingdom, from the earliest forms of life to the vast array of plants we see today.

Mechanical Isolation

A prezygotic reproductive isolating mechanism in which fusion of the gametes of two species is prevented by morphological or anatomical differences.

Sexual Isolation

A prezygotic barrier where different species are unable to mate successfully due to behavioral, physiological, or environmental differences.