Transposons:
a. move within a genome without making duplicates.
b. move within a genome while making duplicates.
c. use an RNA intermediate.
d. use a DNA intermediate.
e. All of the above.
E
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The northern boundary of the distribution of Saguaro cacti is defined by
A. areas in which temperatures do not drop below freezing. B. the availability of water year round. C. the presence of pollinating insects. D. proximity to coastal environments. E. the frequency of low-intensity fires.
Mycorrhizae are especially effective in helping plant roots uptake
A. nitrogen. B. phosphorus. C. potassium. D. iron. E. magnesium.
__________ is rapid diversification into new species
that occupy novel niches. Fill in the blank(s) with the appropriate word(s).
Antidiuretic hormone (ADH) decreases the amount of water absorbed by the kidneys and increases the volume of urine output.
a. true b. false