mitosis Flashcards
1
Q
definition of a chromatid
A
each of the two thread-like strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.
2
Q
name the phases of mitosis
A
prophase
metaphase
anaphase
telophase
3
Q
state what happens during prophase
A
chromatin fibres coil and condense becoming visable under a light microscope.
protein molecules form spindle-shaped structures linking the poles of the cell
4
Q
state what happens during metaphase
A
chromosomes are moved to the centre of the cell and then held in position by the spindle fibres at the centromere of the chromatid.
5
Q
state what happens in anaphase
A
the centromeres are split by spindles pulling them apart. this forces the chromatids to sperrate
