How do nucleotides form DNA?

Answer 1

DNA is just a pattern made up of four different nucleotides . Each nucleotide consists of a sugar (deoxyribose) in the middle of a phosphate group and a nitrogenous base.

Nucleotides form a pair in a molecule of DNA where two adjacent bases form hydrogen bonds. The nitrogenous bases of the DNA always pair up in specific way, purine with pyrimidine (A with T, G with C), held together by weak hydrogen bonds.

The four bases in DNA's alphabet are:
adenine (A) - a purine
cytosine(C) - a pyrimidine
guanine (G) - a purine
thymine (T) - a pyrimidine

Strands of DNA are made by joining sugar and phosphate as backbone (by phosphodiester bonds): two such DNA strands run antiparallely forming the sides of a ladder and the paired bases act as the rungs of the ladder. The molecule appears as a twisted ladder and is called a double helix.

Please read the links carefully to understand more.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Natalie Ahrens

The sugar-phosphate backbone of DNA forms through phosphodiester bonds between the 3' carbon of one nucleotide and the 5' carbon of the next nucleotide. The sequence of nucleotides determines the genetic information encoded in the DNA molecule. Nucleotides form DNA through a process called polymerization. This involves linking nucleotides together in a specific sequence.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.