He signal that marks the end of a gene and causes transcription to stop is called what?

Question

He signal that marks the end of a gene and causes transcription to stop is called what?

Answer 1

It's called a stop codon, of which there are three types in the human genome.

Answer 2

a stop codon.

Answer 3

The stop codons mark the end of translation, not transcription.

Transcription is usually ended by a sequence that creates a hairpin loop in the RNA, followed by a AU rich sequence. The loop slows movement of the RNA polymerase and the AU rich RNA only allows a weak bonding to the complementary DNA sequence. In many cases this is sufficient to allow the RNA to detach from the DNA, in others the presence of the rho protein enhances the termination process

Answer 4

"The RNA codons are read by ribosomes until the last or stop condon (one of UGA, UAA or UAG) enters the ribosomal groove.  The stop codon is the "period" at the end of the mRNA sequence that tells the ribosome that the translation of that mRNA is finished.  The completed polypeptide chain is then released from the ribosome, and the ribosome separates into its two subunits."

Regarding transcription, both that and translation take place before the stop codon.  Transcription is where the DNA is encoded in mRNA and translation is when this information is decoded and used to assemble polypeptides. The first occurs in the nucleus and the second in the ribosome.  When these peptide chains, cause by the bonding of amino acids, reaches about 50 amino acids long they are called proteins.

Answer 5

It is an AT rich region (in the DNA), but it has a name and it's called the termination sequence.