HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Adeninie
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Cytosine
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Guanine
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Detailed explanation-1: -Answer and Explanation: An unmutated segment of DNA that contains 40 molecules of adenine, will contain an equal number of thymine as well. This is due to adenine always bonding with thymine in DNA.
Detailed explanation-2: -According to Chargaff’s rule, Concentration of adenine=concentration of thymine. therefore if [A]=40% then the [T] will also be 40%.
Detailed explanation-3: -It guanine is 40% then cytosine will also be 40%. Similarly, Aenine pairs with thymihne, if guanine is 40%, the remaining 60% will be Adenine. So Theymine will also be 60%.
Detailed explanation-4: -Therefore, Guanine would be 20% and total of G+C = 40% and hence A+T would be 60% that is 30% each. Hence, option C is correct answer.
Detailed explanation-5: -Answer: There would be 20% Cytosine.