Genetic Code Fully Explained | Codon | Class 12

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Hi Everyone! Welcome To My Channel "Ali Academy Biology Lectures"

About This Video ........................

In This Video Lecture You Will Learn Basic Concept Of Genetic Code
Genetic code is a combination of 3 nucleotides, which specify a particular amino acid.
as nonsense codons. These codons are usually present at the end of the gene and
occur in proteins. With four DNA nucleotides (G,C, T and A ) only 42 or 16, diferent pairs
43 or 64 diferent combinations of three, more than enough to code for the 20 amino
punctuation between the three nucleotide units.
using them to synthesize a protein or aminoacyl-tRNA complexes in cell free systems. ‘
of nucleotides could be formed. However, these same nucleotides can be arranged in
hence are also called stop codons. Every gene starts with initiation codon AUG, which
acids. The genetic code is a triplet code and the reading occurs continuously without
three codons UAA, UAG and UGA do not code for any amino acid and hence are known
Khorana tested all the 64 codons by making artiicial mRNAs and triplet codons and
There are three nucleotides in .a codon, because a two nucleotide codon would not
yield enough combinations to code for the 20 diferent amino acids that commonly
After Crick’s initial experiments, Marshall Nirenberg, Philip Leader and Har Gobind
The full genetic code was determinal during m id 60s. Out of 64 codons,
encodes the amino acid methionine.

The genetic code is universal. It is the same in almost all the organisms. For example AGA
not that universal. For example UGA codon is normally a stop codon but, in mitochondria
has been studied. Because of the universality of codon, the genes can be transferred
and AG A and AGG for termination of protein synthesis is instead of arginine. Thus it
from one organism to another and be successfully transcribed and translated in their
speciies arginine in bacteria, in humans and all other organisms whose genetic code
it reads as tryptophan. Likewise AUA was read as methionine instead of isoleucine
new host.
The study of genetic code of mitochondrial DNA however, showed that genetic code is
appearsthatgenetic code is not quite universal.

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Seriously sir ur way of teaching ur way of explanation is #amazing, #superb, #unbeatable🤗😘
Luv from India🤗🇮🇳

faridisufiyan
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I'm watching this video 5 mint ago from exam

AdnanStatus
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Well explained in a short time. Appreciate it ❤️

diptendusaha
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Sirr aapki notes bilkul zahar h sir plss discriotion me notes didiya kro srr aapki bss notes dekh krr he doubt clear hojata h awesome allah aapko tarakki de

mrdashin
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Thank you sir aapka video bahut hame bahut achha laga ham bahut kuchh sikhe aapke is video se aise hi or bhi video बनाइए सर🙏🙏🙏

Mangruboys
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Love from india well explained .😍I appreciate .

tahiraakhter
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mohammedkhalilismailkhan
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You r the best... Guru 🙏 Your video is too helpful in exam time for quick revision 👍❣️

RakhiKumari-mijh
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Easiest explanation ever🙌🏻...Sir, thnks for making efforts for this ..
Really appreciate it❤️!

nehaingle
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Fully understood sir
Love from India ❤

s.anubhab
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Sir, genetic code is present on m- RNA which is transcribed from DNA

ShahidKhan-mleh
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Sir ya jis notes Sy ap ny lecture dia hai ya long ma b likh skty hai?

malikzone
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Sir papers m is tarha leekh skte h jyse ap ne likha h plz give me answer

rooprooprooproop
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Sir your teaching way is very good and awesome ❤

faisalmehboob
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I prepared this for BSC 3rd and i understand clearly....
Love from kanpur, India ❣️

io
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Lagta iss bar Ache marks ayengen mere Sir apki waja se thank you so much
...

itsokay
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I watch many video but not clear my concept except your video u are legent sir

thehobbyteam
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Sir one ques codon three nucleotide ka kyu bna hota h???
How we can explain this?

yogitakandpal
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If 4 nucleotides A, T, C, G then above the 64 genetic code in which how to uracil present in DNA .

dagamerdipu
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Nice video ( achchhi tarah samajh aa gaya), and sir your handwriting is very nice 👌

initiation