In a population of 100 individuals, 49% are of the NN blood type. What percentage is expected to be MN assuming Hardy-Weinberg equilibrium conditions?
A) 42%
B) 21%
C) 9%
D) 51%
E) There is insufficient information to answer this question.
Answer: A
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Which of the following contributes to the emergence of new diseases?
A. Increased drug usage and sexual promiscuity B. Ecological disruption such as the loss of predators and the destruction of rain forests C. Rapid transportation systems and the mobility of the population D. All of the choices are correct.
Finches have lived in Hawaii for
a. 1000 years. b. 100 000 years. c. 4 million years. d. 5 million years. e. 63 million years.
When people speak of the "rain shadow" of the Organ Mountains (the mountains east of Las Cruces, NM), they are referring to the
A) shadow cast by the mist and clouds that hover above the crest of the range. B) forested condition of the western side of the range compared to the eastern side. C) dark-colored chaparral vegetation that grows on the eastern side. D) fact that the vegetation of the bottom of the mountains stays green further into the summer as it is shaded by the tops of the mountains. E) fact that air currents come from the east and moisture is dropped on the east side of the mountains, leaving less moisture on the west side of the mountains.
The rough endoplasmic reticulum is a cell structure that consists of folded membranes that contain ribosomes. What is the advantage of the folded membranes?
A. increases surface area in order to produce more proteins B. decreases surface area in order to produce more proteins C. increases volume of the edoplasmic reticulum in order to produce more energy D. decreases volume of the endoplasmic reticulum in order to make more energy