What protein cleaves the ? repressor monomers to inactivate the repressor protein, and is activated by DNA-damaging agents?
What will be an ideal response?
RecA
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Philodendron flowers have to use a lot of energy to attract beetles as pollinators. This is similar to the energy used by many other flowering plants to produce in order to attract pollinators.
A. spores B. nectar C. seeds D. leaves E. pollen
Which of the following is NOT a characteristic of Natural Killer (NK) cells?
What will be an ideal response?
Protein phosphorylation is another way to alter the conformation of an enzyme and serves exclusively as a mechanism to increase enzyme activity.
a. true b. false
A plant feeding insect species colonizes two different hosts, I and II, in the same habitat
Host preference is determined by a single locus, (A), and the ability to detoxify plant defensive compounds is determined by a second unlinked locus, (B). Genotypes A/A, and A/a prefer host I, whereas genotype a/a prefers host II. Genotypes B/B and B/b can detoxify compounds from host I but not II, whereas b/b can detoxify the com-pounds of host II but not of host I. Why may sexual reproduction come with a cost in this system? a. The offspring of A/A;B/B individuals mating with a/a;b/b will suffer fitness consequences on host I. b. A cross of A/a;B/b x A/a;B/b will produce A/A;b/b offspring. c. Any mating of an A/a;B/B individual with a partner sharing the same host preference will result in offspring that is maladapted to either host. d. A mating of an A/a;B/B individual with a partner sharing the same host preference can result in offspring that is maladapted to either host.