Textbook Question
What is chromatin?a. the histone-containing protein core of the nucleosomeb. the 30-nm fiberc. the complex of DNA and proteins found in the nucleusd. the histone and non-histone proteins in eukaryotic nuclei
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After S phase, what makes up a single chromosome?
a. Two daughter chromosomes
b. A double-stranded DNA molecule
c. Two single-stranded DNA molecules
d. Two sister chromatids
Progression through the cell cycle is regulated by oscillations in the concentration of which type of molecule?
a. p53, Rb, and other tumor suppressors
b. Receptor tyrosine kinases
c. Cyclins
d. Cyclin-dependent kinases
Identify at least two events in the cell cycle that must be completed successfully for daughter cells to share an identical complement of chromosomes.
What evidence suggests that during anaphase, kinetochore microtubules shorten at the kinetochore?