what is double helix in DNA
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Structure of the Double Helix
Structure of the Double Helix
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Structure of the Double Helix
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
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the term double helix refers to the arrangement of the dna strand..
actually the dna strand is made up of three components which are nitrogen base, pentose sugar and a phosphate group.these components join together to form a nucleotide.a large no of nucleotides join to form a chain.
then each chain with opposite polarities join to each other through the hydrogen bonding of nitrogenous base in the shape of a helix.as there are two strands its called double helix.
the nitrogen bases are adenine, guanine. , cytosine and thymine..adenine of one strand joins to the thymine of the opposite strand by two hydrogen bonds and the cytosin of one joins to the guanine of other through three hydrogen bonds.
actually the dna strand is made up of three components which are nitrogen base, pentose sugar and a phosphate group.these components join together to form a nucleotide.a large no of nucleotides join to form a chain.
then each chain with opposite polarities join to each other through the hydrogen bonding of nitrogenous base in the shape of a helix.as there are two strands its called double helix.
the nitrogen bases are adenine, guanine. , cytosine and thymine..adenine of one strand joins to the thymine of the opposite strand by two hydrogen bonds and the cytosin of one joins to the guanine of other through three hydrogen bonds.
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