When a plant is attacked by an herbivore, which of the following actions does not occur?
A. expression of new sets of genes
B. an increase in the production of chemical
defenses
C. mechanical reinforcement of cell walls
D. inhibition of jasmonic acid
E. production of volatile compounds that
attract herbivore predators
D
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Why is it important to have an antibiotic resistance gene in plasmid cloning vectors?
a. It helps the host bacteria grow faster. b. It allows researchers to distinguish bacteria that contain the plasmid from those that do not. c. It aids scientists in developing new antibiotic treatments. d. It allows researchers to distinguish bacteria that contain the recombinant vector from those that contain just the vector. e. It helps the bacteria replicate the recombinant plasmid more quickly.
You can painlessly wade into a pool, but doing a belly flop off of the high diving board hurts because of
A. cohesion in water. B. water's high boiling point. C. water's high density. D. water's neutral pH. E. adhesion in water.
Which chromosomal mutation will cause Williams syndrome?
A. duplication B. deletion C. trisomy D. translocation E. inversion
Explain how disruptive selection could lead to the development of two species from one original founding population
What will be an ideal response?