Natural selection can only act on traits that

a) are adaptive
b) reduce mortality
c) are heritable
d) are acquired in an individual's lifetime
e) confer a reproductive advantage


Answer: c) are heritable

Biology & Microbiology

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Cancer patients cells are removed and a new gene is introduced into their _____________

Fill in the blank(s) with the appropriate word(s)

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This term refers to the outcome, not the way that the results are achieved, when exact copies of biological entities such as genes, organisms, or cells are produced. 

A. GM organism B. plasmid C. plastid D. clone

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The most primitive group of animals, lacking tissues and organs, are the:

a. sponges. b. corals. c. flatworms. d. gastropods. e. sea anemones

Biology & Microbiology