mRNA is a copy of a gene's DNA sequence that carries the genetic code from the nucleus to the ribosome, where it is translated into a protein.
Here's a breakdown of why this is the best description:
* Copy of DNA: mRNA is created through a process called transcription, where a specific segment of DNA is copied into a messenger RNA molecule.
* Genetic Code: mRNA carries the genetic information (the code) for building a specific protein. This code is written in a sequence of codons, each made of three nucleotides.
* Nucleus to Ribosome: mRNA is produced in the nucleus of a cell, where the DNA resides. It then travels to the ribosomes, which are located in the cytoplasm.
* Translation into Protein: At the ribosome, the mRNA code is translated into a protein. This process involves tRNA molecules that bring specific amino acids to the ribosome according to the mRNA code, forming a polypeptide chain (protein).
Let me know if you'd like to know more about the processes of transcription and translation!
