How DNA is Packaged (Advanced)

[mrfantastik7]

I don't know if I would call this "advanced."

[loquaciousDHU]

OH MY GOD!awesome video!i shall not give up on biology,for there is still hope!

[alexandradgordon]

Amazing! What animation program was used to make this. I am a medical illustrator and am very curious about the process of making this animation.

[Pakpatriotan]

Brilliant Video !

I watched this video to get answer to ONE question and got answers to so many other questions too :)

[TheycallmeJessy]

My teacher showed this vid in class

[12qshiba]

My university prof didn't make sense and this does it in seconds!!!

[Zanothura]

Hello Bio Class...

[ArtsyPetals]

is the protein histones 0:44 when she's talking about the chromatin being looped and further packaged?

[NSNewcomeR]

You just summarized 1 whole chapter in my AP Bio textbook

[libum1]

@NSNewcomeR equivalent to about 10 minutes in a bio210/genetics lecture

[NSNewcomeR]

@libum1 Looked at this for AP Bio, chapter was really short. I didn't get it but it took my entire class to get through it (45 minutes). I just got the whole thing here :)

[PenthouseDiaries]

Now if only taxes were made this easy

[iishisis]

Which model is used for the 30nm chromatin fiber?

[FixerNK]

yey chromosomes!

[42mada]

Umm.. chromosomes are actually always present, they are only VISIBLE when cells are dividing...

[calvinhob74]

@42mada what you are referring to is actually chromatin. They are always present. The term "chromosome" is only reserved for the structure at which chromatins are visible when the cells are dividing

[Lixitina]

its incredible how the DNA the sizes 6 feet can feet into a cromosome that sizes no more than 1500 nm. Just unbelievable!

[kalwedyan]

@Lixitina سبحان الله العظيم

[Petrolianzoolbar]

Thanks for this!

[elefantsnablar]

please allow me to love this video

[mindule]

@italbello6t9 Each chromosome does not contain an entire copy of the DNA, only a piece. All 22 autosomes (non sexual chromosomes) are present twice in every cell: one copy of each of the 22 from your mother, and another from your father, totaling to 44. You also either get one X from your mother, and one Y from your father (resulting in you being a male) or one X from your mother and another X from your father (resulting in you being a female). Either way, you end up with 46 chromosomes.

[italbello6t9]

What I want to know is: Does each chromosome contain a full copy of our DNA?

I have never fully understood this concept, I know each cell contains our DNA in the nucleus, but does each Chromosome contain a full copy as well, for a total of 46 copies of DNA per cell?

[xtremist91]

I'm doing 2nd year molecular biology now and have only just learnt about this. There is still further organisation after the 30nm fibre 'beads-on-a-string' model? We learn that they form a further 300nm loop, then 6 of these loops are organised around a nuclear scaffold which is called a rosette. 30 rosettes form one coil of a chromatid and a chromatid can be made of 10 coils.. Or how ever large the chromosome is. Correct me if I am wrong of course!

[MrTakeUrBitch95]

is that from an electron micrscope or animation cuz i saw u worte x10000000000000000000000000000­000000 or close lol

[kiathekitten]

Wonderful! This taught me better than my teacher did! :D

[hamidasafi]

Incredible!

[nousernameideasleft]

This video is extremely helpful. It was the exact point between dna and chromosomes that was so blurry for me. Thanks a lot.

[2wheelsteve]

You are looking at god,

not a man on a cloud but a survival genius that is even energy sensitive meaning it detects magnetism, electricity, light etc and builds structures to use these energies to help it survive, eyes, navigation, hunting etc

[nadiachicago33]

great video !!!! short and to the point .

[arta91]

thank you :)

[btrl]

Does it show that the 30nm fiber is stacking in a zig-zag mode not a solenoid mode?

[dnrongo]

is this in  real time?

[acidarmitage]

those vibrations are creepy

[felixthemaster1]

if you showed this animation to someone 10 years ago, they would think you were a time traveller

[MrsPoker]

@felixthemaster1 you would be..

[asudevils85]

Correct me if I'm wrong but I think this video has a problem, it looks like the H3/H4 tetramer attaches to the DNA first, which is correct, but then it looks like it recruits the H2A or H2B dimers one at a time, but the H2A and H2B dimers should form a tetramer before they are recruited to the DNA, right?

[x15justice]

thanx for the video !! these 2 minutes helped me understand what 2 hours of reading off a book couldn't.

[the42ndmatt]

There is little direct evidence for the existance of the 30nm fibre in living cells, it's an assumption based on very old Xray scattering data

[youiable]

Wow you just answered like 10 question off my homework!!

Great vid

[mcmcmcmc4444]

I love the tiny fast movements of the molecules, it gives the animation so much realism.

[fcdog555]

okay okay okay, I wanna be a molecular/microbiologist now. thank you

[glasshill]

Awesome!!　Ｔａｌｋ　ａｂｏｕｔ　３Ｄ　ａｎｉｍａｔｉｏｎ　ａｔ　ｉｔｓ　ｆｉｎｅｓｔ！

[sumzkaushalya]

beautiful!

[DNALearningCenter]

@sumzkaushalya Glad you liked it!