.php?id 3268653 t Print I Periodic Table Question 5 cf 9 Sapling Learning Bacter

Question

.php?id 3268653 t Print I Periodic Table Question 5 cf 9 Sapling Learning Bacteria and other microbes can be used to dean up an oi spil by breaking down al into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and he percent thymine in each sample. Assume thr organisms contain normal double-stranded ONA and predict the of he other Sample Acontains 223% Thymine Sample B contains 31.7% Thymine 0 A G. G C C Both samples are then denatured to remove the secondary structure. Which will have the higher to denature? A O ® Give Up & View Solution Check Answer 0Next AExit Previous PC MacBook Air

Explanation / Answer

According to chargoff's rule A always binds with T by two hydrogen bond and G always pair with T by three hydrogen bond

sample A

22.3% T

22.3% A

(G + C)% = 100 - (A +T)% = 100 - 44.6 = 55.4%

27.7 % G

27.7 % C

sample B

31.7 % T

31.7 % A

(G + C)% = 100 - (A +T)% = 100 - 36.6 %

18.3 % G

18.3 % C

sample A has more G and C percent, that is DNA contains more number of triple bond hence requires higher number of triple bond

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