If individuals move from one population to another, it may cause a shift in allele frequencies due to
a. genetic drift.
b. directional selection.
c. natural selection.
d. mutation.
e. gene flow.
E
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What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-12 M?
A) pH 2 B) pH 4 C) pH 10 D) pH 12 E) pH 14
The first organisms used in recombinant DNA technology were ____________________
Fill in the blank(s) with correct word
In somatic cell nuclear transfer, which of the
following occurs?
a. the adult cell injected into the egg cell immediately starts dividing. b. an electric current causes the injected adult cell to empty its nucleus into the egg cytoplasm. c. DNA repair enzymes repair all of the adult cell’s mutations before the cloned cell begins cell division. d. only the nucleus of the adult cell is injected into the egg cell. e. none of these things happen in somatic cell nuclear transfer
Which of the following tumor-suppressor genes encode proteins that inhibit cell division when cell conditions are unfavorable?
A. p16. B. Rb. C. BRCA1. D. NF1. E. All of these are tumor-suppressor genes, so they all produce proteins that inhibit cell division.