Difference between A DNA, B DNA And Z DNA

A DNA, B DNA And Z DNA- This lecture explains about the difference between A DNA, B DNA and Z DNA. It explains the structural differences between A,B and Z DNA by comparing parameters like helix pitch, base per turn, helix twist and the major groove and minor groove structures. B DNA is the most common form of DNA inside cells. While A DNA and Z DNA are originated at different environmental conditions.
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Thank you so much. All my confusion gone.

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[@shreyasinha8305]

Shomu sir, please tell example of bDNA , aDNA and zDNA.
ALSO where these found

[@motobacktoconstitution4138]

Shomu please tell or put picture please so we know you are not making this up from fantasy story from Dragon ball z or Pleides cant use in actial life we are living in

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Sir plz make a video on anti and syn conformation of DNA

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[@robo9719]

Can someone tell me for what reasons we have differnet types of DNA, where i can find them and why functions they have?

[@abhinavneoharysvarma8551]

They just form, that's the only explanation I can think of

[@kaziabulmasum7223]

Thank you sir.
I know that you will obviously replying so, I want to know what's your subject and which particular part of your subject you specialized.
By the way i'm a biotechnology first sem student😇

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Sir please make video regardimg c3 n c2 endo etc in dna

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[@rishitapatel7543]

Hello sir.. May I ask that Why B form of rna is not present in rna ? Please give the answer

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Beautifully explained sir

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When I was going through helix parameters I couldn't understand the terms but you just amazingly explained it..Thank you sir 😇

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[@rishabhhirwani123]

Can we say that... A-DNA and Z-DNA is Non B-DNA Or it is different??

[@stephenbaffourgyawu1601]

What is the angle of inclination of the base pairs of the various DNA from the horizontal.

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Tysm

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[@jugemudane]

Hello, Sir. May I ask what book reference did you use. I want to read a book contains complete information about the differences of the DNA conformations just as what you have presented. Thank you :)

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Which form of DNA describe by watson and crick model

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Thank you sir nice explain

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[@hamsa.b.mhamsa.b.m2922]

Sir you said Z DNA contain more number of base pair , there is more space blw two base pairs compared to A and B then it should have less number of base pair in Z DNA know sir

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thank you so much.

[@iqramajoka6695]

How Z DNA contains more base pairs? It has a rise of 0.37nm which is more than that of B DNA. it means that it has more distance between its base pairs. So, how will it have more base pairs with that increased distance?

[@ahmadmasood1760]

I have a question please if someone can answer me soon i will be thankful, as Z form has most rise distance it must contain less bases per turn because distance between bases is more so less bases will get adjusted in the same length. correct me please

[@ahmadmasood1760]

i got an answer in later part, thanks.
:D

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Insightful lecture

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how did you do it can you share with me , thank you

[@b.s.1302]

i feel like you made one error: because the rise in Z-DNA is the biggest, so there should be less base pairs in Z-DNA???

[@apoorvasharma1256]

what is it meant by a left handed or a right handed dna?

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Nice explanation

[@manuelschueck9083]

Nice video!
But where can you find alpha and z dna in the human genom? And are there functional differences between the types of DNA?

[@tejasvipatil4387]

You can find A DNA in dehydrated environments and Z DNA in high salt conditions - they change conformation to reduce electrostatic phosphate group repulsions in each state.

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Helpfull

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[@NIPSZ]

I have a question, sort of unrelated, but I cannot find the answer. The question is: Nutritionists say that you can change your DNA by eating healthier and quitting dangerous vices such as smoking and drinking. Is this true? If so, then could a criminal eat healthy and then change their DNA and be relieved of a previous crime? This doesn't make sense. Can a person change their DNA by eating healthier, or just change their genetics, or can they not change their DNA or genetics no matter what?

[@RedBar3D]

Eating habits may affect your DNA *epigenetically*.Epigenetics govern which regions of your DNA are expressed at what levels. Smoking may give rise to agents that epigenetically modify your DNA so that certain genes are expressed at potentially harmful levels. This goes for bad eating habits as well, I suppose.

[@NIPSZ]

Simon Nylund
Thank you Simon...So it is true. That is good to know since I have gone the healthy route along with others. How can these DNA changes in an individual change their DNA epigenectically and not genetically? So, police use genetic data and not epigenetic data? I am a bit confused. Can somebody's DNA change in 10 years? How can cold cases use DNA if DNA changes? Does it only change slightly but stay the same enough to convict a criminal?

[@RedBar3D]

N 10SZ DNA is wrapped around protein cores in a structure called *nucleosomes*, similar to beads on a string. These protein cores have tails that extend outward from the nucleosome structure. When the tails are acetylated, enzymes which remove the protein cores, thereby enabling the transcription machinery to _access_ the DNA, are recruited. The DNA may then be transcribed.
Police make use of *genetic* data, i.e. the sequence of base pairs in your DNA. This sequence typically does not change overtime. Your epigenetics may however change.

[@RedBar3D]

+Simon Nylund The nucleosome modification described above is to answer your question about how these epigenetic modifications take place. It is an example of epigenetic changes to your DNA. Unlike epigenetics, the genetics of your DNA (the sequence of bases) do not typically change; your cells do every possible bit of work to ensure that they do not. Police therefore use the _genetics_ of a suspect's DNA to match against the DNA found at the crime scene. It's also interesting to note that the labs that match DNA typically only look at specific regions of the DNA (markers), so even if your genetics did change overtime, a change in those particular regions is unlikely.

[@anshulsharma4222]

it cannot change ur dna but the gene expression

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that helped, thanks :D

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thank you so mucchh!!

[@RebeccaJacksonMaitriyah]

Can you explain about the triple strand = the science community are creating a new species with a triple strand. This is being celebrated in various platforms. E.g. the queens ceremony before her death.. Yusuf Harari.. And so on

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nice video

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Is 12 strend DNA really exist ? If it does please put picture as well as triple or quadruple strend DNA please

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What is roll??

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[@sheraziz147]

What is mean by left and right handed? Plz Sir

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Rotation around the axis

[@syedsheerazoffical]

Adn pitch is 2.86nm

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[@juleekumari-7769]

sir a.b.c.d& z d.n.a ka complete notes.. chahiye...please sir help ...🙏

[@iqramajoka6695]

What is meant by deepness of the groove?

[@shomusbiologyofficial]

Means the depth of the groove

[@lina94dhyaa23]

thank u ❤

[@biancabrandao1074]

Somebody can’t talk me why of “B” “Z” “A” DNA?

[@esmanurkocoglu3582]

Indian accent

[@JudyNepune]

thanks :)

[@Rojisenarath]

I thought A DNA was narrow and B DNA is broad

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👍