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Title: Molecular Basis of Inheritance
Description: This notes contain simple explanation of Molecular Basis of Inheritance.
Description: This notes contain simple explanation of Molecular Basis of Inheritance.
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Notes on Molecular Basis of Inheritance
DNA
(1) DNA is a long polymer of deoxyribonucleotides
...
(3) Bacteriophage lambda has 48,502 base pairs
...
(3) In some viruses like retroviruses, the flow of
information is in reverse direction, which is from RNA à
DNA à mRNA à Protein
...
(2) There are two types of nitrogen bases:
(a) Purines (Adenine and Guanine)
(b) Pyrimidines (Cytosine, Uracil and Thymine)
(3) Adenine, Guanine and Cytosine are common in RNA
and DNA
...
(5) In RNA, Pentose sugar is ribose and in DNA, it is
Deoxyribose
...
(7) Two nucleotides are joined by 3’-5’ Phosphodiester
linkage to form dinucleotide
...
(9) The two strands of DNA (called DNA duplex) are
antiparallel and complementary, i
...
, one in 5’->3’ direction
and the other in 3”->5” direction
...
(2) It was first identified by Friedrich Meischer in 1869
...
Packaging of DNA Helix
(1) The basic unit into which DNA is packed in the
chromatin of eukaryotes
...
(3) Distance between two conjugative base pairs is
0
...
6 X109 bp X 0
...
2
meters
...
(2) All living beings have the capacity to reproduce
because of DNA
...
At the time of cell division, it divides in equal parts in the
daughter cells
...
e
...
RNA
(1) RNA is the first genetic material
...
(3) RNA used to act as a genetic material as well as
catalyst
...
(5) RNA may be of two types – genetic and non-genetic
Title: Molecular Basis of Inheritance
Description: This notes contain simple explanation of Molecular Basis of Inheritance.
Description: This notes contain simple explanation of Molecular Basis of Inheritance.