Primary growth in plants originates in
A. apical meristems.
B. lateral meristems.
C. vascular cambium.
D. cork cambium.
E. tracheids.
A. apical meristems.
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Pol III holoenzyme of E. coli is composed of:
A. three Pol III cores, two ? clamps, two clamp loaders. B. two Pol III cores, two ? clamps, and one clamp loader. C. two Pol III cores, two ? clamps, and two clamp loaders. D. three Pol III cores, two ? clamps, one clamp loader. E. three Pol III cores, three ? clamps, one clamp loader.
Whose family tree could possibly harbor the recessive allele for Tay-Sachs Disease?
a. Ian's b. Sylvia's
The scorpionfish in the above figure is using ____ for protection.
A. mimicry B. display behavior C. warning coloration D. chemical defenses E. camouflage
Mouse embryonic stem (ES) cells ______________________
(a) can only be produced through therapeutic cloning. (b) can give rise to all tissues and cell types in the body except germ cells. (c) can be implanted in foster mothers to produce cloned cows and other animals. (d) come from the inner cell mass of early embryos.