Central Dogma | Molecular biology | Biochemistry | First Aid Lectures |Lec1#drjamillectures #drjamil
Channel: Dr. Jamil Lectures
Date: 2022-05-04

In this lecture we will discuss about Central dogma of molecular biology biochemistry.What is gene,DNA replication ,Transcription ,Translation,Gene Expression , Reverse transcription , difference between gene expression and DNA expression.


https://youtu.be/aP06bUvyqCA
https://youtu.be/gXGK6F_vDJQ
https://youtu.be/r9yQe_u8keQ



Central Dogma
An organism must be able to store and preserve its genetic information, pass that information along to future generations, and express that information as it carries out all the processes of life.
Classically, a gene is a unit of the DNA that encodes a particular protein or RNA molecule.
Gene expression and DNA replication are compared below. Transcription, the 
first stage in gene expression, involves transfer of information found in a double-stranded DNA molecule to the base sequence of a single-stranded RNA molecule. If the RNA molecule is a messenger RNA, then the process known as translation converts the information in the RNA base sequence to the amino acid sequence of a protein.
When cells divide, each daughter cell must receive an accurate copy of the 
genetic information. DNA replication is the process in which each chromosome is duplicated before cell division. 
Gene Expression DNA Replication 
Produces all the proteins an organism 
requires
Duplicates the chromosomes before 
cell division 
Transcription of DNA: RNA copy of a 
small section of a chromosome 
(average size of human gene, 
104–105 nucleotide pairs)
DNA copy of entire chromosome 
(average size of human chromosome, 
108 nucleotide pairs) 
Transcription occurs in the nucleus 
throughout interphase
Occurs during S-phase
Translation of RNA (protein synthesis) 
occurs in the cytoplasm throughout 
the cell cycle
Replication in nucleus


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