Chapter Questions
How is the genome replicated prior to binary fission in a bacterial cell?
What are nucleosomes composed of, and how do they participate in the coiling of NA:
What are the differences between heterochromatin and euchromatin?
What is a karyotype? How are chromosomes distinguished from one another in a karyotype?
Which phases of the cell cycle is generally the longest in the cells of a mature eukaryote?
What happens to the chromosomes during $\mathrm{S}$ phase?
What changes with respect to ribosomal RNA occur during prophase?
What event signals the initiation of metaphase?
What molecular mechanism seems to be responsible for the movement of the poles during anaphase?
. Describe three events that occur during telophase.
How is cytokinesis in animal cells different from that in plant cells?
What aspects of the cell cycle are controlled by the $\mathrm{G}_{1}$ $\mathrm{G}_{2},$ and $\mathrm{M}$ checkpoints? $\mathrm{How}$ are cyclins and cyclin-dependent protein kinases involved in cell cycle regulation at checkpoints?