Directional selection favors individuals who are at one end of a distribution of phenotypes
1.True
2.False
1
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X-ray crystallography was used to determine the structure of:
A. cholesterol. B. vitamin B12. C. myoglobin. D. insulin. E. All of these choices are correct.
Advancements in many fields of biology, agriculture, conservation, and medicine benefit from DNA technology because
A. researchers have gained understanding of how the DNA structure relates to many traits and diseases. B. the genes among sometimes diverse organisms can produce favorable traits when transferred from one to another. C. even DNA replication and cell divisions can produce point mutations and gene abnormalities affecting traits of interest. D. All of the answer choices are correct. E. each organism, especially among the eukaryotes, inherits a mix of variable genetic information from previous generations.
Melanin protects the skin from
a. desiccation. b. abrasion. c. ultraviolet radiation. d. infrared damage. e. invasion by bacteria.
NADH and FADH2 are the products of:
a. decarboxylation reactions. b. oxidation-reduction reactions. c. glycolysis. d. formation of acetyl coenzyme A. e. chemiosmosis.