The cell shown here is most likely _____
1.finished with metaphase and transitioning to anaphase
2.preparing to duplicate its chromosomes
3.getting ready to align its chromosomes between the spindle poles in metaphase
4.preparing to decondense its chromosomes at the spindle poles
3
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The R and S genes are linked and 10 map units apart. In the cross R s / r S × r s / r s what percentage of the progeny will be R s / r s?
A) 5% B) 10% C) 25% D) 40% E) 45%
A microbiologist Gram stains a bacterium and finds the bacterium to be blue to purple in color. This identifies the
A. bacterium as gram-positive. B. bacterium as a disease-causing organism. C. bacterium as an endospore former. D. species of bacterium. E. bacterium as gram-negative.
Which of the following contribute(s) to the differences between the Archaea and the bacteria?
A. Archaea have isopranyl glycerol ethers rather than fatty acid esters in their membrane lipids. B. Archaea lack muramic acid. C. Archaea differ from bacteria in their tRNA composition, ribosome structure, and antibiotic sensitivity. D. All of the choices are correct.
How does Salmonella grow in host cells? How does it differ from Shigella?
What will be an ideal response?