Which of the following causes epigenetic modifications to DNA that affects gene expression without changing the DNA sequence? Base pair expression. DNA methylation. Mutation in regulatory sites. Gene knockout.

Epigenetics: Explain DNA methylation. How does this process influence cellular function?

Which one of the following features could you use to determine the length of the RNA that is produced based on the gene, before it is processed? The exon and intron sequences The promoter and enhancer sequences The start and stop codons for translation The transcription start and termination sequences

A nonsense mutation results in an exon junction complex remaining on the mRNA. This mRNA:   Question 7 options:   Will be destroyed via nonsense mediated decay.   Will be destroyed via RNA interference.   Will not be translated due to RNA interference.   Will be post-transcriptionally modified using RNA interference.   Will be translated due to read-through strategy.

Which of the following mutations would not convert a proto-oncogene into an oncogene?     A translocation that places the gene at a new locus where gene expression is increased.     A mutation in the coding region that makes the protein resisitant to degradation.     Gene duplication.     A mutation in the coding region that makes the protein hyperactive.     A deletion of an enhancer that lies 3’ to the coding region.

Gene expression can be affected by all of these EXCEPT: - Considering chromosomes  -Adding mote ATP -Degrading mRNA -Degrading proteins

Which method is most likely used to regulate the expression of a gene that is active during embryonic development but then silenced for the rest of the life of the individual? Histone modification Post translational modifications Alternative Splicing Controlling RNA export from the nucleus

Proteins that bind to DNA and influence the rate at which particular structural genes will be expressed are calledtranscription factors.autosomes.enhancers.sex-linked traits.mutations.

The product of transcription is a polypeptide. a short piece of RNA. a short piece of DNA. a sequence of amino acids.