How are chromosomes maintained in the equatorial plane during mitotic metaphase?
a) by binding to the metaphase plate
b) by a tug-of-war between balanced pulling forces exerted by chromosomal spindle fibers from opposite poles
c) by a tug-of-war between balanced pulling forces exerted by polar spindle fibers from opposite poles
d) by a tug-of-war between balanced pulling forces exerted by astral spindle fibers from opposite poles
Ans: b) by a tug-of-war between balanced pulling forces exerted by chromosomal spindle fibers from opposite poles
You might also like to view...
True or False: Rats can learn to make any kind of association if repeated for a sufficient length of time
A. true B. false
To date, humans have interfered with all of the biogeochemical cycles on Earth, but this interference has been of the
greatest magnitude, in terms of human-induced changes in climate, in the:a. hydrologic cycle. b. nitrogen cycle. c. carbon cycle. d. sulfur cycle. e. phosphorus cycle.
Decomposers
A. are unimportant links in a food web. B. recycle organic to inorganic compounds. C. cause disease and destruction. D. require a source of light energy.
A chemical is reported to inhibit bacterial replication. Bacterial cells are placed in medium with all nutrients necessary for replication. The chemical is added to the culture, and after a half hour an extract of the DNA is prepared. A significant percentage of the DNA is in pieces about 1000 to 2000 bases in length. The results are consistent with the chemical blocking the function of DNA ligase.
Answer the following statement true (T) or false (F)