All male honeybees develop from unfertilized eggs. This is an example of
A) parthenogenesis.
B) sexual reproduction.
C) budding.
D) hermaphrodism.
E) external fertilization.
A
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In the experiment performed by Benzer for intragenic mapping which of the following is the most critical control?
A. Perform the experiment with each different virus alone to determine the rate of reversion mutation B. Re-type the strain of E. coli C. Test the agar to make sure it can support E. coli and viral growth D. Perform at least five dilutions to make sure the dilutions were performed correctly
____ increases the frequency of adaptive mutations in a population over time
a. Fitness b. Natural selection c. Artificial selection d. Adaptive radiation e. Macroevolution
Gel electrophoresis is a technique that takes advantage of what property of DNA?
(a) Gel electrophoresis moves DNA across a gel through hydrophobic interactions of the hydrogen bonds (b) Gel electrophoresis moves DNA across a gel because DNA has a negative charge (c) Gel electrophoresis moves DNA across a gel through hydrophilic interactions of the hydrogen bonds (d) None of the above are true
Extracellular ground substance is composed of
a. liquid proteins. b. lipids. c. polysaccharides. d. fibrous proteins. e. specialized cells