Pleiotropic genes
a. act on secondary sexual characteristics.
b. influence more than one aspect of
phenotype.
c. are additive.
d. produce lethal effects when homozygous.
e. are none of these.
B
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Which of the following might be a result of adding a secondary consumer to the aquatic ecosystem illustrated above?
A) a decrease in the number of primary consumers B) a decrease in the population of decomposers C) an increase in atmospheric carbon dioxide D) an increase in the population of scavengers E) a decrease in the carbon sink
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Indicate whether the statement is true or false.
Why don't all animals that group hunt show the same evolutionary trajectory?
What will be an ideal response?
Helena’s doctor has advised her to take calcium supplements to help prevent:a
osteitis. b. osteoporosis. c. osteopenia. d. osteoarthritis
e. osteon disease.