Any change in allele frequencies in a gene pool is called ____
a. natural selection
b. macroevolution
c. microevolution
d. mutation
e. artificial selection
ANSWER: c
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Which of the following correctly pairs the particles of an atom with their physical properties?
A. Proton-positively charged; neutron-uncharged; electron-negatively charged B. Proton-negatively charged; neutron-uncharged; electron-positively charged C. Proton-positively charged; neutron-negatively charged; electron-uncharged
A Norfolk chicken has feathers that have an overall gray appearance, but if you look at an
individual feather, it is either black or white. Feather color in these birds is expressed as __________.
a. codominance b. incomplete dominance c. sex-linked d. pleiotropy
The collection of sperm from a male and the use of that sperm to impregnate a female of the same
species is called:a. host mothering. b. artificial insemination. c. in situ conservation. d. in vitro fertilization. e. ex situ conservation.
A purpose of the plasma membrane is to:
A) produce proteins. B) keep harmful substances within the cell. C) form the outer boundary of a cell. D) form ribosomes. E) allow no contact with other cells.