What would happen if a mutation created a new allele that decreased fitness?
A) The new allele would spread through the population and decrease the fitness of that population.
B) The new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring.
C) The new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness.
D) The individual with the new allele would wait for an environmental change so that its fitness would increase again.
B
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The continuous release of mucus by the epithelial cells lining the respiratory tract is an example of
A) regulated secretion. B) constitutive secretion. C) the mucus response. D) the formation of clathrin-coated pits. E) phagocytosis.
The vector for Rocky Mountain spotted fever is the ________.
A. mosquito B. tick C. flea D. louse
What do osmosis and diffusion have in common?
a. Both process uses ATP as their energy source. b. Both use glucose as their energy source. c. Neither use energy. d. They have nothing in common.
Multicellular fungi like this mushroom are composed of threadlike structures called
1.Mycelia
2.Hyphae
3.Coenocytes
4.yeasts