Compare effects of promoter DNA methylation and histone methylation on gene activity.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2022–2025.
A multicellular organism uses inherited DNA information during development and reproduction. (a) Describe causes of base substitutions and their possible consequences. (b) Distinguish between mitotic and meiotic cell division in eukaryotes. (c) Explain how…
Identical twins differ in methyl-group attachment to amino-acid residues of proteins associated with one chromosome. Which interpretation best fits the observation? A. One twin has a different order of DNA bases at every gene B. Both twins must have identical…
Explain how methylation associated with nucleosomes can affect transcription.
In a model cell population, expression of gene K helps suppress uncontrolled division. The graph compares two promoter conditions. Which interpretation is best supported? A. Methylation increases DNA replication and therefore prevents tumours B. Methylation…
Outline one way nucleosomes can affect transcription.
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