Polypeptides are composed of many
A. amino acids.
B. carbohydrates.
C. nucleic acids.
D. fatty acids.
A. amino acids.
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Examine Figure 23.2 in your textbook. If we defined a taxon to include only the extant coelacanths and lungfish but not their most recent common ancestor, it would be a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
Which of the following genes would most likely play a role in promoting kin selection?
A. wingless -- critical for the formation of wings in fruit flies B. SRY -- the gene that initiates male sex determination C. Major Histocompatibility Complex (MHC) genes -- allow mammals to recognize related individuals D. the genes important for the development of large antlers in the caribou Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about the genetic basis of kin selection? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Any relationship in which one organism lives and feeds either inside or on the outer surface of another organism, harming the organism in the process, is classified as
a) commensalism b) parasitism c) none of the other choices d) mutualism
The shaded group includes all of the species that were derived from one common ancestor, this group could also be called a(n) 
A. paraphyletic taxon. B. homology. C. clade. D. polyphyletic taxon. E. phylum.