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

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

The study of the distribution of animals and plants around the world is ____

a. diversity b. biogeography c. ecology d. natural history e. environmentalism

Biology & Microbiology