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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DNA replication would not occur.
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DNA replication would occur more frequently.
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DNA replication would occur at the same rate.
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DNA would replicate only half of its nucleotides.
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Detailed explanation-1: -Q. Which best describes what would happen if the double helix structure of DNA could not be “unzipped”? DNA replication would occur more frequently.
Detailed explanation-2: -Once the DNA is unzipped it forms a template for the binding of the DNA Polymerase and other accessory proteins. The synthesis of a new strand occurs using this unzipped DNA as the template in the 5’-3’ direction.
Detailed explanation-3: -The double-helix shape allows for DNA replication and protein synthesis to occur. In these processes, the twisted DNA unwinds and opens to allow a copy of the DNA to be made. In DNA replication, the double helix unwinds and each separated strand is used to synthesize a new strand.
Detailed explanation-4: -Key enzyme involved in DNA replication, it is responsible for ‘unzipping’ the double helix structure by breaking the hydrogen bonds between bases on opposite strands of the DNA molecule.
Detailed explanation-5: -If the two strands of a DNA molecule are separated, each can be used as a pattern or template to produce a complementary strand. Each template and its new complement together then form a new DNA double helix, identical to the original.