Difference between chromosomes and chromatids?

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RedRosesBloom
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Getting really confused between these two? I know that a chromatin is DNA wrapped around a histone protein and I thought that a chromatid was the same as a chromosome 'x-shaped'. But in anaphase 2 it says that the separated chromatids now called chromosomes are pulled to opposite poles of the cell?! So they are not the same thing?
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TSR2016
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Chromatids are like the petals of the chromosomes while the chromosome is the whole X shape
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IRoranth
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(Original post by RedRosesBloom)
Getting really confused between these two? I know that a chromatin is DNA wrapped around a histone protein and I thought that a chromatid was the same as a chromosome 'x-shaped'. But in anaphase 2 it says that the separated chromatids now called chromosomes are pulled to opposite poles of the cell?! So they are not the same thing?
Chromatids are the 'X' shape separated into two. There are two chromatids, but only one chromosome- i.e. an entire chromosome is the entire 'X' shape.

e.g. during anaphase in mitosis, the chromosome separates into chromatids, which migrate to opposite poles of the cell:

X = I I = (migrate to opposite poles)
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RedRosesBloom
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(Original post by TSR2016)
Chromatids are like the petals of the chromosomes while the chromosome is the whole X shape
ok, thank you
(Original post by IRoranth)
Chromatids are the 'X' shape separated into two. There are two chromatids, but only one chromosome- i.e. an entire chromosome is the entire 'X' shape.

e.g. during anaphase in mitosis, the chromosome separates into chromatids, which migrate to opposite poles of the cell:

X = I I = (migrate to opposite poles)
Right of course, thank you, makes so much more sense! I was referring to anaphase 2 in meiosis though.
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IRoranth
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(Original post by RedRosesBloom)
ok, thank you
Right of course, thank you, makes so much more sense! I was referring to anaphase 2 in meiosis though.
It's ok, and yeah I figured if I explained it to you via mitosis it would have been easier to understand Glad I helped.
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