Biology, asked by 6280335562, 1 year ago

Why do chromosomes contain DNA in the nucleus?

Answers

Answered by Anonymous
5
The nucleus of a cell contains chromosomes, which carry genetic information in a long molecule called DNA. Genes are regions ofDNA that carry the code to control a particular cell activity or the production of a particular protein.
Answered by khanarisha3110
2
So you're basically asking why the genetic material is in the nucleus?

If that's what you ask, then I think my answer might make some sense to you.

The nucleus acts like a protective barrier for the genetic material. Because the genetic material contains all the “precious” information required by the cell to function. The nucleus is like a safe for the gentic material.
Now you may wonder, why do bacteria don't have a nucleus? Well for that you'll have to understand the concept of evolution.
Bacteria are prokaryotes and are believed to be the first living organisms on this planet, and in the atmosphere in which they developed surviving physically was more important and hence they have the thick cells walls and resistance to high temperatures, etc.
Over the course of time, evolution occured and eukaryotes came into light and they had a defined nucleus where the genetic material could be stored and protected from the external environment so that the species is conserved, the genome is conserved. Because the cells, now did not have to physically protect themselves but had to genetically protect themselves as well.
Ultimately evolution is the survival of the fittest. So all the changes that occur or all the things that are present like the genome being restricted to the nucleus, are so that the cell survives in the present environment.
If there ever comes a time when the protection of genome might not be required (though I don't think this will happen, but you can always imagine) then the DNA might not be present in a nucleus, rather there might not be any nucleus.
Hope it help
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