simple DNA questions?

Question

what would happen if some of the DNA had been altered when translated to mRNA?
also What would happen if you translated the DNA incorrectly.
one more... how could mutations occur in a cell

Answer 1

mRNA is transcribed from DNA. proteins are translated from mRNA.

DNA can be thought of as the master copy.
RNA is just a very transient copy and is quickly recycled by the cell whether it's a correct copy of the DNA or not. Whether or not a mistake in the mRNA would result in an altered protein would depend on the change and the protein, but the existence of the incorrect copy of mRNA would be so fleeting (and just a single copy) that the cell probably wouldn't even notice.

Mutations that might be noticed would be those occurring to DNA. Fortunately cells have 2 copies of their genetic material.

Answer 2

If some of the DNA had been altered when translated to mRNA it will produce the wrong proteins. But our body have many repair mechanisms and normally it will be repaired so the chances of our body producing wrong proteins is quite low i guess.

DNA is most vulnerable to damage during replication and transcription and when it is active.


Mutations are changes to the base pair sequence of genetic material (either DNA or RNA).
Mutations can be caused by copying errors in the genetic material during cell division and by exposure to ultraviolet or ionizing radiation, chemical mutagens, or viruses, or can occur deliberately under cellular control during processes such as meiosis or hypermutation.

Answer 3

DNA is transcribed to mRNA. If a nucleotide base is changed, this could affect the codon (3 nucleotide sequence), which could affect the protein created. Basically, mutation occurs. Mutations can occur from many things, including diseases and overexposure to the sun.

Answer 4

unmarried standed of DNA is in basic terms one million/2 of a double helix DNA. the unmarried strands are copied into RNA that are then copied into amino acids. throughout the time of transcription the double helix DNA splits into 2 strands of unmarried-stranded DNA that are then coded into RNA by utilizing way of a polymerase. unmarried stranded DNA isn't the comparable as RNA (the main difference being RNA has a uracil somewhat of a thymine which a DNA has)