Convergent evolution occurs when:
a. closely related populations or species diverge from one another because natural selection op-erates differently on each of them.
b. two or more populations or species become more similar to each other because they are ex-posed to similar selective conditions.
c. Both of the above.
d. Neither of the above.
B
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Inflammation of the larynx that is usually associated with the common cold or influenza syndromes and that is caused almost exclusively by viruses is:
a. laryngitis. b. laryngotracheobronchitis. c. epiglottitis. d. Vincent angina.
In the international division of labor, one reason for China's role as a major producer of everything from shoes to toys is the endless supply of people who will work for ________ an hour
A) nothing B) 6 cents C) 60 cents D) 6 dollars E) 60 dollars
What is the function of the animal developmental genes studied by King and researchers?
A. The developmental genes encode proteins that play a key role in guiding body plan development. B. The developmental genes encode proteins that speed up mutation rates in DNA of eumetazoans. C. The developmental genes encode proteins that determine differences in the epidermis of different animal groups. D. The developmental genes play a role in growth rate and molting. E. None of the answer choices is correct.
Compare and contrast receptor tyrosine kinase (RTK) signaling pathways such as the EGF–Ras–MAPK pathway with serine/threonine kinase (S/TK) signaling pathways such as the TGF? pathway with respect to (a) receptors, (b) phosphorylation targets,
(c) signal transduction from the plasma membrane through the cytoplasm to the nucleus, and (d) effects on gene regulation. What will be an ideal response?