THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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G pairs with T with 3 hydrogen bonds and A pairs with C with 2 hydrogen bonds
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G pairs with T with 2 hydrogen bonds and A pairs with C with 3 hydrogen bonds
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A pairs with T with 2 hydrogen bonds and G pairs with C with 3 hydrogen bonds
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A pairs with T with 3 hydrogen bonds and G pairs with C with 2 hydrogen bonds
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Detailed explanation-1: -The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
Detailed explanation-2: -The base pairing rule is that adenine always is with thymine and guanine always bonds to cytosine. They hold the two strands of DNA together, but are weak enough to come apart during replication.
Detailed explanation-3: -Guanine and thymine are similarly incompatible. A always pairs with T and G always pairs with C because these are the only combinations that allow for hydrogen bonding to occur, given the spatial constraints of the double helix, which requires there to be one purine and one pyrimidine in each base pair.
Detailed explanation-4: -ACGT is an acronym for the four types of bases found in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T). A DNA molecule consists of two strands wound around each other, with each strand held together by bonds between the bases. Adenine pairs with thymine, and cytosine pairs with guanine.
Detailed explanation-5: -Definition. A unit of two bases in a molecule of DNA or RNA. In DNA, adenine always pairs with thymine (A-T), and guanine always pairs with cytosine (G-C). RNA is the same, except that adenine always pairs with uracil (A-U).