Members of this genus are commonly used as model systems for studies of ecology and evolutionary
biology.
a. Ichthyostega
b. Anolis
c. Dunkleosteus
d. Eusthenopteron
e. Archaeopteryx
B
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An organ must contain at least:
A. two different tissue types. B. two different cell types. C. all four of the tissue types. D. connective tissue. E. two different muscle types.
B and T cells are two kinds of _______ formed in bone marrow.
a. lymphocytes b. interferons c. antibodies d. effector cells
Which of the following is a typical means of halting normal cell division?
A) the shortening of telomeres B) increasing the activity of p53 C) triggering apoptosis D) activating oncogenes
How would the model change if absolute energy expenditure, instead of fitness cost, were plotted on the y-axis of the graph below?
a. It would result in identical cost curves for all three levels of male quality. b. The fitness optima for tail length would be spaced more widely. c. We would predict overall shorter tail lengths. d. There would be no difference.