Question

How are chromatin , chrosomes and chromatids related?

Answer 1

chromatin is the wire like mesh which form thin thread like substances called chromatids.  chromatids together form chromosomes.

Answer 2

chromosomes are the thing that you inherit from your parents 23 pairs . 46 total 
chromatids  are the individual chromosomes in a pair 
chromatin is the strands of DNA combined with proteins that make up the chromosomes i hope u understand