Name three human cancers with a genetic predisposition. What appears to be the genetic cause of each?
What will be an ideal response?
retinoblastoma (RB): autosomal dominant with 90 percent penetrance; breast cancer: mutations in BRCA1 and BRCA2; FAP-associated colon cancer: mutations in APC, DCC, and p53
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The process of crossover is best defined as genetic recombination that occurs between ________.
a. non-sister homologous chromatids in meiotic prophase I b. sister chromatids in meiotic prophase II c. non-sister chromatids in meiotic prophase II d. sister chromatids in meiotic prophase I
Bioinformatics includes all of the following except
a) using computer programs to align DNA sequences. b) using mathematical tools to make sense of biological systems. c) using molecular biology to combine DNA from two different sources in a test tube. d) analyzing protein interactions in a species. e) developing computer-based tools for genome analysis.
In men, as testosterone levels increase, LH levels
A) increase. B) move up or down depending on the point in the cycle. C) remain the same. D) decrease.
Tumors that arise from mesenchymal cell types are called
a) carcinomas b) lymphomas c) sarcomas d) adenocarcinomas