TOPIC 7.2: Transcription and gene expression Flashcards
(6 cards)
1
Q
What is Transcription?
A
transcription is the process of synthesizing RNA molecules using DNA as a template.
2
Q
In what direction does transcription occur?
A
transcription occurs in a
5’ to 3’ direction.
3
Q
What determines if genes are transcribed?
A
Chemical modifications of histone tails
4
Q
what causes nucleosomes to pack DNA tightly?
A
Methyl, Acetyl, or phosphate group
5
Q
Transcription in Eukaryotes
A
mRNA strands can be modified before leaving the nucleus and being translated into polypeptides
6
Q
What happens during splicing
A
introns are removed from pre-rna after transcription, leaving exons in mature mRNA strands sent to the cytoplasm
