Exam 4 study guide - Chapter 16 1 A gene is made up of...

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Chapter 161) A gene is made up of three exons (numbered consecutively) with two introns (intron 1 between exons 1 and 2 and intron 2 between exons 2 and 3). What would happen if there were a mutation at the 3’ splice site of intron 1?
2) What would happen if there were a mutation in the operator of the trpoperon?
3) In eukaryotes, where would a protective modification be found on mRNA?
4) Enhancers located hundreds of bases upstream of a gene can be brought to the promoter by _________.
5) The portions of the mature mRNA where RNA-binding proteins can attach in order to change RNA stability are known as***untranslated regions6) Epigenetics refers to a special kind of hereditary mechanism. Epigenetic changes do not change the DNA nucleotide sequence, yet their effect on gene expression can last for several generations. In one surprising study, it was found that the grandsons of men who suffered a famine were less likely to die of cardiovascular disease. The experience of famine made some cardio-protective change in the sperm of those grandfathers that was passed on. What type of change was likely responsible?
7) ________ is the first protein to bind to mRNA to being initiation of translation.
8) What part of the ribosome is important in catalyzing peptide bonds?
9) If every cell in the body gets the same DNA, how do the cells of an embryo make differentstructures and take on different roles? (Select all that apply.)
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