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the start of transcribing signal is a nucleotide sequence called a "promoter", which is located in the beginning of a gene. its a specific place where RNA attaches and starts synthesis and the prmotoer dictates wish of the DNA strands is to be transcribed

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12y ago
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10y ago

Transcription starts in the nucleus, when a mRNA strand forms a template of the DNA. the DNA unwinds, and free bases (A,C,T,G) attach to the mRNA strand. when this is finished the DNA 'zips' back together, and the mRNA strand moves through the nucleus and into the cytoplasm to the ribosomes. once the mRNA leaves the nucleus, transcription has ended and translation starts

ribosomes use tRNA that carry the amino acids to complete the protein synthesis process.

basically, in the RNA strand in the ribosome there are triplets of bases (C,G,A,U) and the tRNA have corresponding triplets that code for a specific amino acid. if the RNA sequence is GCA, then the matching tRNA would be CGU. let's say CGU codes for Arginine (Arg), the CGU tRNA would have an arginine amino acid on the end.

this tRNA triplet with attached amino acid is drawn to the ribosome, and if the triplet fits the RNA strand then the amino acid will form a polypeptide bond with the last amino acid in the chain.

when the ribosome reaches a stop codon, the amino acid chain is finished and folds to form a protein!

and there you have DNA transcription, translation and protein synthesis :)

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9y ago

RNA polymerase creates a transcription bubble, and this separates the two strands of the DNA helix. This breaks the hydrogen bonds between complementary DNA nucleotides.

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14y ago

In protein synthesis, transcription begins inside the nucleus where the DNA template is being used to make mRNA.

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11y ago

in chromosomes ahahahhaahaha!!/

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13y ago

i think it starts in the promoter

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11y ago

Right after the start codon.

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Q: Where does the process of transcription begin?
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