How are chromatin, chromatid and chromosomes related to each other?
Answer:
Inside the nucleoplasm, a tangled mass of thread-like structures is called chromatin. These are purely composed of DNA and histone proteins are used to pack it.
When a cell starts to divide, the tangled mass of chromatin condenses into rod-like bodies called chromosomes. The chromosomes contain stretches of DNA which carry information for protein synthesis.
A chromatid is one copy of duplicated chromosome which is generally joined to the other copy by a centromere.