Please help I keep on getting confused.

[timmy3]

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I dnt think I have properly understood the difference between chromosome, chromatins and chromatids
Chromatin is the thread of DNA bound to Histones and condensed form leads to chromosomes.
Chromtids occurs after division of chromosome from centromeres.

during interphase of meiosis....does the chromtids or chromosome duplicates? If the chromosome duplicate its does not make sense to me how does during meiosis 1 u have half the number of chromosome. I have looked into all videosand I get the general steps but still cant get this around my head.

Please someone help me out.

 

[Kahreek]

chromatin is the substance seen under photon microscopy in the nuclei that is avid for some types of dyes. It represents scrambled chromosomes and they only aggregates to form clear groups of chromosomes when duplication is due.
chromosome is the unit itself, as explain in bio cell.
chromatid is one half the duplicated chromosome ready for disjunction.

 

[graviton]

A chromosome (single strand) duplicates forming the classic X shaped structure, a duplicated chromosome, which contains 2 sister chromatids joined at the centromere . These (46) pair up with their homologous chromosome counterparts at the center of the cell (creating a 2 by 23 formation). One out of the homologous chromosome pair gets pulled to the other side of the cell (23) and the another one to the other (23). The sister chromatids aren't separated during Meiosis 1.

edit:

Sorry about my English.

 

[circulus vitios]

You've seen the chromosome picture that looks like an X?

Chromatin is double stranded DNA wound about histones. The dsDNA/histone package is called a nucleosome, so you could also say that chromatin is composed of nucleosomes.
Chromosome is a condensed form of chromatin, the X you see in the pictures.
A chromatid is one half of the X.

Just remember: chromatiN involves histoNes or Nucleosomes.