Which of the following is a very common form of DNA base damage that results fro

Question

Which of the following is a very common form of DNA base damage that results from the oxidation of a specific base. (a) DNA double strand break (DSB) (b) pyrimidine dimer (CPD) (c) depurination of guanine (AP site) (d) deamination of cytosine (e) 8-Oxo-2'-deoxyguanosine (8-oxodG) 7. Which of the following DNA repair pathways is considered error-prone? (a) nucleotide excision repair. (b) SOS system. (c) direct reversal (d) photolyase. (e) methyl-directed mismatch repair. 8. How many hydrogen bonds normally form between adenine and guanine in DNA? (a) 0 (b) 1 (c) 2 (d) 3 (e) 4 Nonsense-mediated decay ___. (a) eliminates many mRNAs containing nonsense mutations. (b) may result from frameshift mutations. (c) is a form of mRNA decay. (d) prevents the expression of truncated proteins. (e) all of the above A man and a woman have 2 child. The parents are each heterozygous for a different disease-associated allele of the xeroderma pigmentosum group A gene (XPA).

Explanation / Answer

6.option E. 8-oxo-2l deoxyguanosine

7.B.SOS system

8.A. Zero.

Not sure about other answer. Please post them separately.

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