What would happen if the dna in a cell that is about to divide were not replicated?

Also, whe dna is replictaed does the replicated dna have the same nitrogen-base sequence as the original strand of dna?



What are the advantages of having DNA remain in the nucleus of the cell?



thx a million :)What would happen if the dna in a cell that is about to divide were not replicated?
1. If the DNA were not replicated prior to mitosis, then each chromosome would be a single strand, and could not be divided. During anaphase, half of the chromosomes might be pulled to one pole of the spindle, the other half to the opposite pole. You would end up with 2 cells where each contained half of the genes needed to make the whole organism, which would most likely make the cell nonviable.



2. Yes, DNA has the same sequence when transcribed, barring mutation.



3. Having DNA in the nucleus helps protect it from damage from the environment, and allows for better regulation of the genes.What would happen if the dna in a cell that is about to divide were not replicated?
if they were not replicated, the daughter cells would not be identical...they would get half the genes of the original cell.

Yes, they have the same sequence after replication.

Having dna in the nucleus is better because it is protected from pathogens that target dna and alter it.