Transcription & Gene expression
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7 Terms
What builds mRNA and where is it built
RNA Polymerase; the nucleus
What is the direction of transcription
5’ to 3’
What does methylation do
stop the expression of some genes
What is promoter DNA and what does it do
It’s non-coding DNA that helps regulate gene expression
What types of changes can happen in DNA methylation patterns
Differentiation of stem cells
Activation of lymphocytes during infectiom
Imprinting behavior
Weightless in space
What does mRNA contain
Exons - sequences of mRNA expressed as proteins
Introns - sequences of mRNA which are not expressed at proteins
How can mRNA be modified after transcription
the splicing of mRNA after transcription to remove introns/ change number of exons - make different polypeptide and increase number of proteins in an organism