A type of selection that favors altruism directed toward relatives is called
A. kin selection.
B. sexual selection.
C. mate selection.
D. group selection.
Answer: A
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The Bacteria and Archaea are the ONLY domains in which organisms exist that can
A) catalyze the transformation of inorganic nitrogen species for biosynthesis. B) assimilate nitrite. C) conserve energy from the transformation of inorganic nitrogen species. D) catalyze the incorporation of inorganic nitrogen species into biomolecules.
In mammalian defenses against invading pathogens, all of these are considered nonspecific defense mechanisms EXCEPT
A. acquired immunity. B. the skin. C. mucous membranes. D. the inflammatory response. E. antimicrobial proteins (e.g., interferon).
Which organisms have exoskeletons?
a. earthworms b. humans c. sea anemones d. insects and clams e. amphibians
What is the main reason that duck-billed platypuses are classified as mammals rather than birds? Consider that they possess a bill, as do birds, and lay eggs rather than give birth to live young like other mammals
What will be an ideal response?