Draw one eukaryotic chromosome as it would appear during interphase, during each of the stages of mitosis, and during cytokinesis. Also draw and label the nuclear envelope and any microtubules attached to the chromosome(s).

The sensor kinase for the OmpF: OmpC two-component regulatory system is

A. the MicF RNA. B. the OmpK protein. C. the EnvZ protein. D. None of the choices are correct.

Which of the following is important in microscopy?

a. resolving power b. number of lenses c. base weight d. angle of adjustment knobs

Individuals who have recovered from tetanus are not immune to the disease and must be immunized

Indicate whether this statement is TRUE or FALSE.

Diane Dodd's experiments using fruit flies demonstrated that

A) the evolution of reproductive barriers occurs much too slowly to produce measurable effects in the laboratory. B) new species can form in a single generation by the production of new reproductive structures. C) formation of a reproductive barrier between two populations is more likely if they experience and adapt to different environmental conditions. D) reproductive barriers usually are absolute: Either two populations are fully willing and able to interbreed, or they are strictly separated by a fully effective reproductive barrier.