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Let's explore the fascinating structure of DNA with Spark.E!DNA consists of two parallel strands that twist around each other, forming a double helix structure.Each strand is made up of units called nucleotides. Let's examine the components of a nucleotide.A nucleotide is assembled from these three components: a deoxyribose sugar, a phosphate group, and a nitrogenous base.DNA contains four different nitrogenous bases: Adenine, Thymine, Guanine, and Cytosine, commonly abbreviated as A, T, G, and C.These components come together to form the complex structure of DNA, which carries our genetic information.DNA base pairing follows specific rules that ensure accurate genetic information copying.Adenine pairs with Thymine using two hydrogen bonds.Guanine pairs with Cytosine using three hydrogen bonds, making their connection stronger.When DNA strands separate, each strand serves as a template for building its complement.These base pairing rules are essential for DNA replication and ensure genetic information is copied accurately.This precise base pairing system ensures that genetic information is preserved during DNA replication.The DNA replication process begins with the helicase enzyme.Helicase breaks the hydrogen bonds between base pairs, separating the DNA strands.DNA polymerase then begins adding complementary nucleotides to both separated strands.Replication occurs in two directions. The leading strand is synthesized continuously in the 5' to 3' direction.The lagging strand is synthesized discontinuously in short segments called Okazaki fragments.This semiconservative replication results in two identical DNA molecules, each containing one old strand and one new strand.Let's review the key points of DNA replication.This completes our exploration of DNA replication.