Transcription (DNA -> mRNA)

• transcription copies a specific gene that will be made into a protein

• transcription is making a copy of DNA into a copy of mRNA

• transcription takes place in the nucleus

• RNA polymerase

• RNA is only synthesized using the template strand of DNA

• That means, only one side of the opened DNA molecule is used to make mRNA

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• The chromosome only transcribes one gene at a time

• Cells need thousands of proteins for survival

• Therefore your DNA contains thousands of different genes

A --U

G--C

There is no Thymine in RNA, instead Uracil is used. This allows the cell to protect the RNA from being destroyed before the protein is made.

• after the mRNA is made, it leaves the nucleus

• mRNA enters the cytoplasm and is picked up by the ribosome

• This is where transcription ends

• the next step is TRANSLATION....