Naina B. answered • 09/25/17
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Nucleus is the site of chromatin and chromosomes both.
Cell during resting phase/interphase or S1/S2, G1/G2 only has chromatin.
During M phase or at onset of cell division, chromatin unwinds and chromosome become apparent.
Chromatin is made of DNA wound to histone proteins and unit is called nucleosomes..
DNA represent gene coding sequences and promoters, entire genes in other words.
After cell division is complete, chromosomes again condense in form of chromatin.
Hope you can pickup the correct answer from above facts in combination with your text-book and glossary therein.
Bruce P.
Ally: Unfortunately, the question isn't fully clear, so you should check your notes. But I think what is confusing you is that many of these terms are different ways of looking at the same materials.
"chromatin" simply refers to (DNA packaged with proteins). The DNA is still 'there'; we're just referring to a 'bigger picture'.
'genes' refer to the PURPOSE of the DNA--looking at what it has to 'say'. When the DNA is packaged into chromatin, the 'genes' are still there, just as the DNA still is.
'chromosomes' are the LONG strands of DNA packaged AS CHROMATIN found in cells. In some cases, you will hear chromosomes 'happen' when the chromatin is packaged even more tightly in preparation for mitosis or meiosis... but not everyone bothers to make this distinction.
The nucleus is where the genetic material (genes in the form of DNA, which is packaged into chromatin) 'lives' or is stored. So chromatin is in the nucleus, genes are in the nucleus, chromosomes are in the nucleus.
Unfortunately, then, the correct answer MAY depend somewhat on what your instructor or textbook has chosen to emphasize in their specific definitions. But I hope you can see from the above that all these terms are related and refer to related things!
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09/27/17
Ally H.
09/27/17