The genetic disorder(s) associated with DNA methylation include
A) Prader-Willi syndrome.
B) Angelman syndrome.
C) some cancers.
D) Huntington's disease.
E) all of the above
E) all of the above
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To infect a cell, HIV must
A. bind both CD4 and a cytokine co-receptor. B. bind both CD8 and a cytokine co-receptor. C. bind both CD8 and a class I MHC proteins. D. kill cytotoxic T cells and bind CD4.
The chromosomes have arrived at opposite poles during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
You are studying a bacterium found in the normal intestinal flora of humans and most other mammals, and are doing an experiment to determine the optimum growth rate of this bacteria. You have inoculated five nutrient broths, and are incubating one broth at each of the following temperatures: 5oC, 25oC, 38oC, 42oC, and 55oC. At which temperature would you predict to see the optimum growth rate?
5oC 25oC 38oC 42oC 55oC
Because of the mechanism of sex determination, males of many species can be neither homozygous nor heterozygous. Such males are said to be ________
A) recessive B) complementary C) dominant D) hemizygous E) None of the answers listed are correct.