My biology teacher said that chromatids are the two ones that are attached and chromosomes are the ones that are by themselves.
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Chromatid(s) make up chromosomes. At the beginning of interpahse you have 1 chromosome which is equal to one chromatid. Right before mitosis you now have 1 chromosome with 2 chromatids also known as sister chromatids.
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chromatids are less condensed structure with no structural differentiation like telomere,centromere,satelliete, while chromosome does have that...