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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proofread dna strands
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unzip dna strands
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covalent bonds phosphate and deoxyribose
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breaks hydrogen bonds
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Detailed explanation-1: -Answer and Explanation: The correct answer is b) DNA polymerase causes covalent bonds to be made between deoxyribonucleotides.
Detailed explanation-2: -DNA polymerase catalyzes the formation of the phosphodiester bond by adding the deoxynucleoside triphosphate onto the growing polynucleotide chain. During this step-wise process, a single pyrophosphate molecule is released every time the chain is elongated by one deoxyribonucleotide.
Detailed explanation-3: -As the new nucleotides line up opposite each parent strand by hydrogen bonding, enzymes called DNA polymerases join the nucleotides by way of phosphodiester bonds.
Detailed explanation-4: -An enzyme, DNA polymerase, is required for the covalent joining of the incoming nucleotide to the primer. To actually initiate and sustain DNA replication requires many other proteins and enzymes which assemble into a large complex called a replisome.