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Question
mitosis in motion
inside the nucleus of a cell, dna is normally found in a relaxed form called chromatin, but when its time for the cell to divide during mitosis, this chromatin coils tightly to form chromosomes.
each chromosome has two identical halves called chromatids, joined in the middle by a centromere. these chromatids will separate later to make sure each new cell gets the right genetic information.
outside the nucleus, two tiny organelles called centrioles move to opposite sides of the cell. they help organize spindle fibers - thread - like structures that stretch across the cell. these fibers attach to the centromeres and pull the chromatids apart, guiding them to opposite ends of the cell.
in the end, one cell becomes two, each with a full set of chromosomes - mission mitosis completely.
interphase (g2) (precedes mitosis)
centrioles
chromatin
nucleolus
nuclear envelope
prophase
nuclear envelope breaks up.
spindle fibers
chromosome, consisting of two sister chromatids
stages of the cell cycle: how to remember the stages in order.
i -
p -
m -
a -
t -
c -
The stages of the cell - cycle are Interphase (I), Prophase (P), Metaphase (M), Anaphase (A), Telophase (T), and Cytokinesis (C). Interphase is the growth and preparation stage before mitosis. Prophase is when chromatin condenses into chromosomes and the nuclear envelope breaks up. Metaphase is when chromosomes line up in the middle of the cell. Anaphase is when sister chromatids are pulled apart. Telophase is when new nuclear envelopes form around the separated chromosomes. Cytokinesis is the division of the cytoplasm to form two daughter cells.
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I - Interphase
P - Prophase
M - Metaphase
A - Anaphase
T - Telophase
C - Cytokinesis