Need these questions answered please 1) Give 2 differences between poly q and no

Question

Need these questions answered please

1) Give 2 differences between poly q and non-poly q repeats

2) what happends to these regions during DNA replication?

3) What would be the resulting mutation be? eg. insertion deletion frame shift

4) Why is it diffucult to repair the deamination of a cytosine in MRNA?

5) Decribe three post transtional processes that occur in ekaryotes but not in prokaryotes

6) How does the amino acid sequence of a protein produced in a prokaryote differ from that in a eukaryote

Need these questions answered asap please! have a test tommorrow morning! Need them in detail but easy to understand like a bullet point break down if possible

Explanation / Answer

1. The repeated codon is CAG which codes for glutamine which results in polyglutamine tract. These are caused by trinucleotides repeats ie CAG. These are present in the coding region.

Non polyglutamine repeats are those which does not involve CAG repeats and are not present in the coding region.

2. The resulting mutations are insertion.

3. The chemical instability of cytosine makes it difficult to repair destination of cuisine in mRNA.

4. N-acetylation, n myristoylation, SUMOylation are the post translation modification that takes place only in eukaryotes

5. In eukaryotes the initiating amino acid is methionine rather that N formylmethionine

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