An important technique that helps provide insight into interesting genetic questions at the molecular level, such as reasons for hairless dogs, is called __________.
A. DNA sequencing
B. genetic testing
C. inbreeding
D. a testcross
A. DNA sequencing
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A family can share a genetic risk of developing cancer if:
A. the cancer is caused by somatic cell mutations. B. the cancer is caused by germ-line mutations. C. a germ-line mutation in one of the genes implicated in the cancer occurred in an ancestor. D. a somatic cell mutation in one of the genes implicated in the cancer occurred in an ancestor. E. All of the answer options are correct.
Which of the following methods is the most effective as birth control?
a. condoms b. diaphragms c. abstinence d. oral contraceptives e. vasectomy
As described in "A Note About Bacterial Reproduction -- and the "Culture Bias,"" the organism Epulopiscium does not divide by binary fission. Rather, each cell increases in size and divides to produce multiple daughter cells that are held within the original cell well. After lysis, those daughters are released to repeat the process. Assuming Epulopiscium could be grown in pure culture in the laboratory in broth and on solid media (it currently cannot), which method would be best for measuring the increase in biomass during growth?
A. Direct microscopic count; the experimenter can directly count the number of cells and extrapolate to the biomass. B. Turbidity readings from a spectrophotometer; the increase in biomass will directly vary with the turbidity of the culture. C. Chemostat growth; it will prevent the culture from entering the death phase. D. The viable plate count; each colony derives from a single cell and the number of colonies equals the number of cells.
A certain drug has a side-effect of disrupting levels of luteinizing hormone (LH). Which patients should be advised that this drug could affect their fertility?
A. Neither-it would only disrupt late fetal development. B. Men and women C. Men D. Women