Model 2- DNA Sample Comparison Sample 3 G T tn Sample 2 Sa G A CAGT ACCTAACAGCT
ID: 135965 • Letter: M
Question
Model 2- DNA Sample Comparison Sample 3 G T tn Sample 2 Sa G A CAGT ACCTAACAGCT DNA from organism A attached to a nitrocellulose membrane 8. How many bases are found in each of the DNA samples 1-4 as well as in the DNA from organism A in Model 2? Using your knowledge of base-pairing, which DNA sample in Model 2 will be 100% comple. mentary to organism A? 9. 10. Which other DNA sample in Model 2 is likely to pair with one of the strands from organism 11. How many of the total number of base pairs in the sample you chose in Question 10 are noncomplementary between the strands? netic TreesExplanation / Answer
8. The number of bases in each of the DNA sample including DNA from organism A = 21. It can be done by simply counting of all the alphabates. Each alphabate indicates a single base. A indicates adenine, C indicates cytosine, G indicates guanine and T indicates thymine.
9. Sample 3 is 100% complementary to organism A. The complementary base for adenine is thymine while for guanine is cytosine. In sample 3 all are correctly paired bases.
10. Sample 1 is likely to pair with the strand of organism A. Most of the bases from sample are is complementary to the the strand from organism A and thus more likely to pair.
11. 5 base pairs are noncomplementary. 5 of the bases are not paierd with their complimentary bases.
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