What are the mistakes made when DNA is copied incorrectly?

Answer 1

Cells tend to make mistakes copying nucleotides in the DNA.

Answer 2

Assuming you mean a mutation: Each time DNA replicates itself, it needs to unwind and unzip (in a manner of speaking; the twin molecules separate and split). When it does this, there is the first chance of a mutation - a part of each molecule may not completely separate from the other or unwind itself in the wrong way, and this can make the "copied" DNA different from the "original". Secondly, when the bases begin joining to the original chains, there is a slight chance that the wrong bases will connect in a pair; when the new molecules rezip and rewind, that "wrong" connection can cause problems for both the structure and the function, and leads to mistakes further along (as when the 'broken' copy replicates, the mistake will carry over again). Thirdly, the original DNA may have been damaged between its own creation and its replication by a virus, radiation of some kind or a chemical which has adjoined itself. This alteration, as before, will carry over into any copy made from it.

Answer 3

Yes mistakes can be made when DNA is copied. The wrong base nitrogenous base can be substituted which would code for a different amino acid. If a base is left out, all subsequent bases would be off by one. This has the potential for a huge mistake. There are also other errors that occur. Fortunately cells also have enzymes that check and repair the DNA as it is being copied. Cells also go into a apoptosis, (cell suicide). Apoptosis means that the cell with miscopied DNA or other problems doesn't go into mitosis and start a cancer which would be far more common without these checks and balances.

Answer 4

Placing one base in for another base. Skipping the reading of a whole triplet of bases. Running many repeats of a section of DNA. Leaving out a base.

Some of the above have neutral effect, some have very deleterious effect on the protein coded for and a few have a beneficial effect on the coded protein against the immediate environment.

Answer 5

Cells tend to make mistakes copying nucleotides in the DNA.

Answer 6

These mistakes can cause mutations. Some will not make any difference, some can make a positive change and some are lethal.

Answer 7

yes