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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each one with two original strands
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each one with two new strands
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each one with one new strand and one original strand
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one with two new strands and the other with two original strands
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Detailed explanation-1: -The result of DNA replication is two DNA molecules consisting of one new and one old chain of nucleotides. This is why DNA replication is described as semi-conservative, half of the chain is part of the original DNA molecule, half is brand new.
Detailed explanation-2: -Each DNA molecule resulting from replication has one original strand and one new strand. DNA replication is carried out by a series of enzymes. Helicase is the enzyme that “unzips” a molecule of DNA by breaking the hydrogen bonds between base pairs and unwinding the two strands of the molecule.
Detailed explanation-3: -Semi-conservative replication. In this model, the two strands of DNA unwind from each other, and each acts as a template for synthesis of a new, complementary strand. This results in two DNA molecules with one original strand and one new strand.
Detailed explanation-4: -Replication produces two identical DNA double helices, each with one new and one old strand.
Detailed explanation-5: -Each new double strand consists of one parental strand and one new daughter strand. This is known as semiconservative replication.