THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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615
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774
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830
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929
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Detailed explanation-1: -A single strand of DNA contains 830 adenine, 929 cytosine, 774 guanine and 615 thymine bases. How many guanine bases would be in the complementary strand? 5.
Detailed explanation-2: -(D) 80 bases are adenine and 20 bases are guanine. DNA is a biological macromolecule that carries genetic information. It is made up of two strands that wrap around each other to form the double helix shape as we can see here.
Detailed explanation-3: -Hence, the sum of the purine residues equals the sum of the pyrimidine residues; i.e. A + G = T + C. Here, [A] = 30%, therefore, % of [T] is also 30%. Thus, [G]+[C] = 100-60 = 40%. [G] = 20% and [C] = 20%.
Detailed explanation-4: -Adenine (30%) = Thymine (30%) Guanine (20%) = Cytosine (20%) Therefore, 60% A-T and 40% C-G.
Detailed explanation-5: -only short DNA sequences can extend off the RNA primers DNA polymerase can assemble DNA only in the 3’ to 5’ direction it is more efficient than assembling complete new strands the replication forks block the formation of longer strands DNA polymerase can assemble DNA only in the 5’ to 3’ direction.