Actinomycetes produce many of the antibiotics we use in medicine.
Answer the following statement true (T) or false (F)
True
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The presence of altruistic behavior is most likely due to kin selection, a theory maintaining that _____
A) aggression between sexes promotes the survival of the fittest individuals B) genes enhance survival of copies of themselves by directing organisms to assist others who share those genes C) companionship is advantageous to animals because in the future they can help each other D) critical thinking abilities are normal traits for animals and they have arisen, like other traits, through natural selection E) natural selection has generally favored the evolution of exaggerated aggressive and submissive behaviors to resolve conflict without grave harm to participants
Joint (synovial) cavity
What will be an ideal response?
On average, genetic drift will increase the frequency of a deleterious allele.
a. true b. false
Which f the following mutagens is matched correctly with its action?
A) 2-Amino purine is an adduct-forming agent B) ethidium bromide is an intercalating agent C) 5-Bromouracil is an alkylating agent D) acetaldehyde is a free radicle E) mustard gasses are base analogs