transcription
Cards (10)
- what is transcriptioncreating an mrna copy of a gene from the dna template
- stage 1the rna polymerase enzyme binds to dna
- stage 2hydrogen bonds between the dna break and two strands of the double helx separate
- stage 3antisense strands act as the template for the mrna synthesis
- stage 4free rna nucleotides align with dna template thru complementary base pairing
- stage 5rna molecule Uracil pairs with adenine, adenine pairs with thymine and cytosine pairs with guanine
- stage 6rna polymerase catalyses the formation of phosphodiester bonds between adjacent rna nucleotides
- s7complementary mrna strand is formed, carrying the same base sequence as the dna sense strand
- s8process ends when rna polymerase reaches stop codon and detaches from dna and terminates transcription
- s9mrna is released, detaches from dna and dna rewinds into its double helix structure