Under what circumstances is a mixed Nash equilibrium the solution to the hawk-dove game?
a. always when the cost of fighting equals the benefit of a victory
b. always when the cost of fighting is greater than the benefit of a victory
c. always when the strategy of the other player is unpredictable
d. when the strategy of the other player is unpredictable and the cost of fighting is greater than the benefit of a victory
B
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The clonal selection theory implies that
A. related people have similar immune responses. B. antigens activate specific lymphocytes. C. only certain cells can produce interferon. D. memory cells are present at birth. E. the body selects which antigens it will respond to.
Your relatively undiverse tongue microbiome is shaped primarily by environmental factors like temperature and osmotic stress. If you transplanted microbes from your forearm onto your tongue and then re-sampled your tongue 8 hrs later, what would you expect to find?
What will be an ideal response?
Which piece of evidence BEST supports the "out of Africa" model of the evolution of modern humans?
A) African populations show the greatest diversity in numbers at a short tandem repeat (STR) locus on chromosome 12. B) African Homo ergaster/erectus appear almost simultaneously with Asian Homo erectus, 1.6 to 1.9 million years ago. C) Both Indonesian fossil Homo erectus and modern Australian aboriginal populations (which probably reached Australia by way of Indonesia) have unusually prominent and straight brow ridges. D) In most regions, there does not seem to be a rapid replacement of earlier hominins by Homo sapiens. E) There is no solid evidence supporting the "out of Africa" hypothesis.
Given the information that type O is the universal donor blood type and type AB is the universal acceptor, which of the following is not true?
a. Type A can donate to type A and AB and can receive from type A and type O. b. Type B can donate to type B and AB and can receive from type B and type O. c. Type AB can donate to AB, A, and B and can receive from type A, B, AB, and O. d. Type O can donate to A, B, AB, and O and can receive from type O. e. All of the above are true.