What feature do monkeys share with iguanas but not with bullfrogs?
A. thoracic breathing
B. four-chambered heart
C. eggs
D. eyes
Answer: A
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Interpret the pedigree in the accompanying figure by describing each symbol and number. How might the information from this pedigree be used by clinicians and researchers?
What will be an ideal response?
Hyponatremia is a condition characterized by low sodium in the blood. This is a concern for marathon runners who drink too much water, and can cause life-threatening pressure on the brain. Why would this occur?
A. Neurons would take up the sodium from the blood and not be able to polarize. B. Neurons would be stimulated to all fire at once. C. Neurons would swell by osmosis. D. Neurons die in low levels of sodium. E. Neurons cannot give the kidneys signals to reabsorb sodium ions.
Why are human behaviors so difficult so study? What will be an ideal response?
If all of the alleles of a given locus are the same in a population, then the frequency of that allele is
assigned a value of: a. 0.1. b. 1.0. c. 10.0. d. 100.0. e. 1000.0.