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BS 1040: Cell Biology > replication > Flashcards

Flashcards in replication Deck (7)
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1

during which part of interphase does DNA replication occur?

S phase

2

what is the role of kinetochore microtubules in the cell cycle?

attaches to the centromere and maneuvers the chromosomes during mitosis

3

what occurs during prophase?

chromatin condenses
centrioles move far apart and microtubules from cytoskeleton form spindle and aster

4

what occurs during prometaphase?

spindle fibres in two populations; kinetochore and non-kinetochore
nuclear membrane breaks down

5

What occurs during metaphase?

spindle is complete + aster expends to plasma membrane
centrosomes at opposite poles
kinetochore microtubules attached to chromosomes

6

what occurs during anaphase?

kinetochores cleaved by separase enzymes
chromatids move to poles of cell
non-kinetochore microtubules pulled by kinesin, elongating cell

7

How does cytokinesis occur?

ATP and myosin causes the contraction of actin myofilaments in the cortex
cleavage furrow forms