The Structure of DNA: Unveiling the Blueprint of Life

🧬DNA is a double helix structure, resembling a twisted ladder, with major and minor grooves.

🔑DNA is composed of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.

🔗Nucleotides are joined together by covalent bonds between the sugar and phosphate of adjacent nucleotides, forming a sugar-phosphate backbone.

🔍The nitrogenous bases in DNA, adenine (A), thymine (T), cytosine (C), and guanine (G), form complementary base pairs.

💡DNA replication is facilitated by the base pairing rule, where A pairs with T and C pairs with G.

What is the structure of DNA?

—DNA has a double helix structure, resembling a twisted ladder, with major and minor grooves.

What are nucleotides?

—Nucleotides are the building blocks of DNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

How are nucleotides connected in DNA?

—Nucleotides are joined together by covalent bonds between the sugar and phosphate of adjacent nucleotides, forming a sugar-phosphate backbone.

What are complementary base pairs?

—Complementary base pairs are nitrogenous bases that form hydrogen bonds with each other in DNA. Adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

How does DNA replication occur?

—DNA replication is facilitated by the base pairing rule, where A pairs with T and C pairs with G, allowing for the synthesis of two identical DNA strands.

00:00DNA carries the blueprint for all living things and is composed of nucleotides.

00:13DNA has a double helix structure, resembling a twisted ladder, with major and minor grooves.

00:29Nucleotides consist of a sugar, a phosphate group, and a nitrogenous base.

01:06Nucleotides are joined together by covalent bonds, forming a sugar-phosphate backbone.

01:25Nitrogenous bases in DNA form complementary base pairs, such as A-T and C-G.

02:36DNA replication is facilitated by the base pairing rule, allowing for the synthesis of two identical DNA strands.