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5 Answered Questions for the topic Gene Expression

Gene Expression Biology Cell Biology

04/30/19

Can methylation of a promoter induce gene expression in some rare cases?

Can methylation of a promoter induce gene expression in some rare cases? I've read somewhere that methylation of an intron can induce gene expression (eg. Igf2). How is that even possible? Thank... more
Gene Expression Biology Cell Biology

03/16/19

Name two reasons why it is impossible to determine a gene's nucleotide sequence from the amino acid sequence of the polypeptide?

I can only think of one reason, which is because different codons can specify the same amino acids. However I am having trouble thinking of another reason.
Gene Expression Genetics Translation

03/14/19

Redundancy of the genetic code?

One particular codon codes only for one amino acid, but an amino acid can be coded for by several different codons. Now according to the genetic code, the codon `UUU` codes for the amino acid... more
Gene Expression

08/21/17

what is the purpose of a negative transcription factor

transcription factors work alone or with 
Gene Expression

08/21/17

what is the purpose of a positive transcription factor

a tran factor is required for RNA polymerase to initiate transcription at specific promoter, but is not itself part of the enzym. 

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