Which of the following mutations can result in a reduction of β-galactosidase?

a. a mutation in adenylate cyclase

b. a mutation in catabolite activator protein (CAP)

c. a mutation in the CAP site in the lac control region

d. a mutation in the repressor binding site in the operator

#Question id: 5239

#Unit 8. Inheritance Biology

Which of the following statements is not true for Hfr strains of E. coli ?

#Question id: 3273

#Unit 11. Evolution and Behavior

The number of forward mutations is equal to the number of reverse mutations then

a) Population is in equilibrium for forward and reverse mutation rates

b) The population is being in Hardy–Weinberg equilibrium

c) No further change in allelic frequency

#Question id: 1021

#Unit 4. Cell Communication and Cell Signaling

Disease Control (CDC) determine that the agent causing the birds to die is the West Nile virus. Outbreaks of this illness have been observed in several other countries in Asia and the Middle East across the last 50 years, but not in the United States. With this information, what would be the best categorization of this infectious agent/disease

#Question id: 1868

#Unit 4. Cell Communication and Cell Signaling

Which of the following is NOT helpful in the diagnosis of AIDS?

#Question id: 10557

#Unit 6. System Physiology – Plant

The attraction of water to a solid phase such as a cell wall or glass surface known as