DNA was discovered by Frederick Misher while he
was studying on pus cells and found genetic
material inside it to which he called as DNA.
DNA structure of DNA as well as the use of DNA to
produce proteins in three steps that is replication
transcription transcription and translation as and
when required to produce protein.
DNA is basically the polymer of nucleotide
deoxyribonucleic acid. Length of every DNA is
variable which depends upon the number of
nucleotides or number of base pairs that makes it.
length of DNA varies from species to species like
for example humans the total length of our DNA is
2. 2 meters.
The structure of DNA is a nucleotide one
nucleotide beta it is made up of two components a
nucleoside plus pentose sugar a five sorry plus
phosphate group. There are two types of
nitrogenous bases that makes up the DNA
adenine and guanine. The name of the DNA is
given accordingly understood everyone.
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, There are total four nitrogenous bases which
contribute in the formation of the DNA structure.
The structure of purines and pyrimidines is just the
general structure not the details details you
already study in the chapter biomolecule the
another type of nitrogenous. bases. attaches
themselves to the deoxyribose sugar to form
nucleoside. is nitrogenous base which gets
attached to the pentose sugar.
When sugar and nitrogen is based they join the
type of bond formed between them is a glycosidic
bond. First carbon of the sugar binds with the
nitrogenous base with the help of glycoside bond.
The structure is then known as nucleoside right
now. DNA is made up of four nucleotides which
can be of four types either having adenine as
nitrogenous base guanine thymine or cytosine or it
can be thymine.
One nucleotide will be made of n glycosidic Bond
and phospho Ester Bond. DNA is a double
stranded structure and both the strands both the
chains of DNA are anti-parallel to each other.
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