How many varieties of apples account for 90%
of the apples sold in U.S. grocery stores?
a. 5
b. 15
c. 25
d. 50
e. 150
B
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How did Briggs and King move the nuclei between cells?
A. with a glass pipet B. with a dissecting needle C. with a scalpel D. with forceps
The antidiuretic hormone works on ____ that encourages the kidneys to reabsorb water
a. a positive feedback loop b. a negative feedback loop c. the proximal tubules of nephrons in the kidney d. the action potential e. the muscle tissue
Assume that a cross is made between AaBb and aabb plants and that the offspring fall into approximately equal numbers of the following groups: AaBb, Aabb, aaBb, aabb. These results are consistent with ________
A) hemizygosity B) incomplete dominance C) alternation of generations D) independent assortment E) complete linkage
The type of speciation that results in the formation of separate species as a result of geographic isolation is called ________ speciation.
A. gradual B. adaptive C. sympatric D. sexual E. allopatric