The two strands of DNA are held together by hydrogen bonds between the nitrogen base pairs.
There are four bases, adenine, guanine, cytosine, and thymine, in DNA. The bases give DNA their variety. The bases are the "rungs" in the double helix ladders and the "handles"of the double helix are composed of deoxyribose sugar and phosphate. Hydrogen bonds hold all of these components together.
hydrogen bonds
Hydrogen bonds
each strand in the DNA molecule has a gap of 3.4 angstrom(Ao) between them. the total length of one series of strand or 1 DNA molecule is 34 Ao. therefore 34/3.4=10. there are 10 strands or N2 base pairs in a DNA molecule.
Complementary base pairing
DNA has a double halux strand and the direction of the both halux is opposite to each other i.e the go in opposite direction.
Complementary
Hydrogen bonds
hydrogen bonds
Hydrogen bonds
The two strands of DNA are held together by hydrogen bonds between the nitrogen base pairs.
hydrogen bonds
hydrogen bonds
hydrogen bonds
Hydrogen bonds
There are two single strands which are found in the DNA molecule. Each of strand will act as the template for the next one in the double helix molecule.
hydrogen bonds between nucleotide bases
I assume you mean the hydrogen bonding that holds bases of DNA together.
After DNA replication, each new molecule has one strand of the original DNA molecule and the other strand is composed of new nucleic acids. This is due to the semi-conservative replication of DNA.