Different genotypes for the CYP2D6 gene produce significantly different responses to tamoxifen, the medication often
used to treat ____________________. Fill in the blank(s) with the appropriate word(s).
breast cancer
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A newborn is identified as having cystic fibrosis. While both parents are healthy, a genetic screening of both parents will most likely reveal:
A. the father is a carrier of the mutant CF allele. B. the mother is a carrier of the mutant CF allele. C. both mother and father are carriers of a mutant CF allele. D. neither mother nor father are carriers; spontaneous mutation caused the baby's disease.
A Ramachandran plot shows the sterically limited rotational domains:
A. between proline and noncylic amino acids. B. between polar and nonpolar R groups. C. of an R group with respect to the neighboring R groups. D. of an R group with respect to the polypeptide backbone. E. that two polypeptide chains can occupy.
All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for
A. amino acids. B. organic molecules. C. prokaryotes. D. hydrogen cyanide. E. urea.
The study of the distribution of animals and plants around the world is ____
a. diversity b. biogeography c. ecology d. natural history e. environmentalism