Root hairs are most abundant:
A. near the top of the root at the soil surface.
B. near the root tip.
C. along the edges of the root.
D. at branch points in the root.
E. in areas of woody growth along the root.
B
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Which does NOT produce variation?
a. crossing over b. random alignment of chromosomes during meiosis c. mitosis d. genetic recombination of alleles e. sexual reproduction
Which of the following is an example of a conformer?
A) lizard B) rodent C) starfish D) bird
Explain what happens to plant and animal cells when placed in hypertonic, hypotonic, and isotonic environments.
What will be an ideal response?
When only a very few individuals give rise to a new population in a new area of favorable habitat, they might differ in appearance from the other, larger population from which they separated. This effect is called the
A. mutation effect. B. founder effect. C. outbreeding effect. D. inbreeding effect.