DNA methylation may be a significant mode of genetic regulation in eukaryotes. Methylation refers to: Seleccione una: a. altering translational activity, especially of highly methylated tRNAs b. binding of methyl groups to DNA polymerase c. binding of methyl groups to RNA polymerase d. changes in DNA-DNA hydrogen bonding e. addition of methyl groups to the cytosine of DNA
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Step 1: DNA methylation involves adding methyl groups to the cytosine base of DNA. Show more…
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DNA methylation may be a significant mode of genetic regulation in eukaryotes. What does DNA methylation refer to? a. changes in DNA-DNA hydrogen bonding b. binding of methyl groups to DNA polymerase c. binding of methyl groups to RNA polymerase d. altering translational activity, especially of highly methylated tRNAs e. addition of methyl groups to the cytosine of DNA Which of the following is NOT part of the 'transcription initiation complex' in eukaryotes? a. promoter b. terminator c. RNA polymerase d. enhancers e. transcription factors In bacterial cells, the concentration of cAMP is _______ correlated with the concentration of glucose; hence, glucose concentrations should _______ correlated with the amount of transcription in the lac operon (assuming that lactose is abundant). a. not; not be b. positively; be positively c. inversely; be positively d. positively; be inversely e. inversely; be inversely
Md.Daniyal A.
DNA methylation has been linked to gene expression. Histone acetylation is a positive charge that is catalyzed by histones, resulting in reduced affinity of the histone and resulting in the formation of open chromatin. Chromatin remodeling leaves DNA open to associate with nucleosomes by repositioning or removing them. One way in which nucleosomes can be modified is by changing their composition, such as histone variants, which can affect nucleosome mobility and positioning.
Adi S.
Can methylation of nucleotides play a role in DNA replication? If so, what sort of role?
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