i like when he bugs himself as he's writing something and just continue to repeat the same thing over and over: "Transcription... transcription... trans.. scription... transcription! Transcription". Shock teaching, very effective. Amazing video!
I've studied this two years ago in class and didn't understand the differences between chromosomes, chromatin and chromatids, I read 2 different bio books and still didn't understand... today I was trying to explain it to my sister and found your video, and in less than 20 min we learned it easily! Thank you!
My geezus! Week 6 of a 8 week Biology class and I finally understand what in the heck the differences of the 3 C's are! I swear if I could go teleport, I would, just to look you in the eye and say...THANK YOU!
A chromatid is just the compact form of chromatin. It only has this form when cells divide. Most of the time it's not in this compact form. Then the chromatin lies in a very shambolic way in the nucleus. In this form the DNA is far more accessible for enzymes to do their job on the DNA.
Tip: chromatiN , histoNes. I pictured it as 'chromatin' being written vertically with the word 'histone' being written horizontally through and them sharing their 'n' to remember it. Also the protein structures which are called histones look a bit like stones the way Sal drew them. Daft maybe but it helped me remember.
i completely agree with the difficult vocabulary dealing with chromosomes and chromatids. that's what has been confusing me in my genetics unit and you have just completely cleared it up. THANK YOU
2) E.g. 'B' for brown from ones mother and 'b' for blue from ones father. Your compliment would then be 'Bb' Same gene locations on chromosomes, potentially different alleles. That's a simplified example. I think there's several genes and factors actually involved in eye colour but it helps in conceptualising the idea. I believe that Sal does a video explaining the concept somewhere near this one, in the same section. It's good. You should watch it.
omg...DNA replication and DNA transcription is different?! WOW. Why couldn't a textbook differentiate between the two?! I had no idea! My goodness. Such a simple idea is so unclear in a textbook. Thank you so much for posting this video. We college kids pay so much for a book that "has all the answers" and yet it makes simple concepts so complicated.
Thank you. The fact that they can refer to different things and it doesn't entirely make sense made this make so much more sense. My biology professor just never bothered properly explaining the usage of those terms.
To summarise the difference between chromosomes, chromatids and chromatin: -chromatin is the combination of a DNA molecule in a cell carrying out its day to function (synthesising proteins and hormones etc.) and histone proteins. The DNA is in a linear pattern. The cell is NOT DIVIDING. -Chromosomes are linear, short chromatin but without the histone proteins. The cell is preparing for mitotic division during interphase. The DNA has been replicated to form a double armed chromosome. -chromatids are the individual chromosomes of a double armed chromosome joined at a region called the centromere. Together the chromatids are called sister chromatids. After anaphase of mitosis and the sister chromatids divide, they each become chromosomes (that are genetically identical).
Well, you still do not get it imo. Let me clear it up for you, okay? So we all know that a cell contains an organelle called nucleus. This nucleus is the location of the genetic material (i.e. DNA). I must admit that I am not too sure if RNA is more than a nucleic acid( as in if it is also a genetic material). But to continue, the DNA is the stuff that makes up chromatin, chromosome and chromatid. Chromatid = DNA + histones However, this form of DNA and histones/ histone proteins called chromatin represents a lower order of organization. The chromatin is made up of long and thin threads or strands of DNA wrapped around histones to form nucleosomes. When cells are not dividing, the DNA and histones are package in this way. However, when a cell is about to divide, the chromatin condenses ( shortens and thickens) to form strands of DNA and histones called chromosomes. In other words, chromosomes are highly condensed forms of chromatin visible under light microscope prior to cell division. Chromatid on the other hand is any of identical strands of chromosome formed prior to cell division. Two sister/ identical chromosomes are collectively called chromosome. However each of the identical pair held at the centromere is a chromatid/ sister chromatid. When they are separated from each other, they are each referred to as chromosome. I hope this helps. I am Ernst Appiah, a biology tutor living and working in Accra,Ghana.
I don't know why but I can't help but be happy when I watch these videos. It's different then the atmosphere at school, there is a sense of care in your voice, its almost like a family member is teaching me and not a person being paid a small amount of money. yeah.
wow .... simple yet so informative ... this lecture beats all those fancy animations .... best video ... thanks so much ... also you are very well in speaking ...neither too slow nor too fast ,....
loved the video. I was studying for a bio exam and something he explained wasn't clear. I spent an hour in lecture and you spent 18 minutes explaining this clearer than my professor. good stuff.
I've gotten to where I don't even bother with reading the textbook first. I just see what the chapter is about and find a related Khan academy video, then go from there. You're probably saving me money that would've needed to be spent on therapy. ha.
chromatin is basically protein and DNA complex, a special structure, where DNA is wrapped up with protein. this is so its easy to encode DNA. this chromatin condenses to make chromosome which is coiled up DNA. in cell division chromosome makes a duplicate of itself so there are 2 chromosomes attached together but since they are exact copies they are still called chromosome but individual copy is called chromatid. this version of chromosome only appears in cell division.
You are so helpful. I totally get it now. You make it seem so simple and easy! I'm listening to your videos now instead of listening to my professors recordings. Thank you so much!
Most of your videos are extremely helpful, and I enjoy watching them. I am studying for the TEAS 6. Super excited! But, some of the videos leave me confused, like this one. Obviously, you know what you're talking about, but you seem to scatter around often or get choked up. Please, slow down so people like myself can understand what you're saying. I rather watch a 30-minute video of you explaining the topic clearly rather than rushing through the problem. Thoroughly plan the lesson, rehearse a few times before making the video, write down what you want to say, and so on. This video seems thrown together.
I was one simple soul who wanted to clear the confusion regarding Chromatins , Chromatids and Chromosomes. I made the mistake of watching this video and not understanding 10 percent. Now my brain has become fried...
Thank you so much for clearing all of this up for me. i have a test coming up & all of this just wasn't making sense to me. Absolutely amazing at how your video makes it all so understandable & easy to grasp. THANK YOU, THANK YOU, THANK YOU!!!!!!
how is it that your better than my bio professors? i guess its the chromo color in the explanation. and an actual explanation that doesnt disappear of the overhead in 5 sec. moving on to the next... i have so many feelings at this moment.
go to 9:00 to go directly to the chromosome, chromatid, chromatin part
thank you captain
thx
bless your soul
savior omg
you kind soul
I could cry, this channel is great. You guys are making people's lives better.
What is blanc reaction ?
Thanks brother! 😊
Sure
what make you a good teacher is your ability to identify the parts which are confusing to the students. thank you!
Yup
i like when he bugs himself as he's writing something and just continue to repeat the same thing over and over: "Transcription... transcription... trans.. scription... transcription! Transcription". Shock teaching, very effective. Amazing video!
I've studied this two years ago in class and didn't understand the differences between chromosomes, chromatin and chromatids, I read 2 different bio books and still didn't understand... today I was trying to explain it to my sister and found your video, and in less than 20 min we learned it easily! Thank you!
Hi what are you doing now .....😊
Wow you studied it 14 years ago and this comment is 12 years ago. How are you doing?
My geezus! Week 6 of a 8 week Biology class and I finally understand what in the heck the differences of the 3 C's are! I swear if I could go teleport, I would, just to look you in the eye and say...THANK YOU!
Guwapo77 chuss
salomee
@@HamzaKhan-qh5no Nein, Guten Tag!
I could feel your happiness thru the screen.
whats amazing of these videos is that if you turn on caption, the subtitles are so matching and so accurate when he speaks
Yeap
A chromatid is just the compact form of chromatin. It only has this form when cells divide. Most of the time it's not in this compact form. Then the chromatin lies in a very shambolic way in the nucleus. In this form the DNA is far more accessible for enzymes to do their job on the DNA.
Fantastic way of teaching a very difficult subject to the students.
From a former professor in Medical college.
Tip: chromatiN , histoNes. I pictured it as 'chromatin' being written vertically with the word 'histone' being written horizontally through and them sharing their 'n' to remember it. Also the protein structures which are called histones look a bit like stones the way Sal drew them. Daft maybe but it helped me remember.
This literally made me start crying as soon as I started getting it, thank you so much!!
The thing with this is that , it's not boring to study this way!
i completely agree with the difficult vocabulary dealing with chromosomes and chromatids. that's what has been confusing me in my genetics unit and you have just completely cleared it up. THANK YOU
2) E.g. 'B' for brown from ones mother and 'b' for blue from ones father. Your compliment would then be 'Bb'
Same gene locations on chromosomes, potentially different alleles.
That's a simplified example. I think there's several genes and factors actually involved in eye colour but it helps in conceptualising the idea.
I believe that Sal does a video explaining the concept somewhere near this one, in the same section. It's good. You should watch it.
omg...DNA replication and DNA transcription is different?! WOW. Why couldn't a textbook differentiate between the two?! I had no idea! My goodness. Such a simple idea is so unclear in a textbook. Thank you so much for posting this video. We college kids pay so much for a book that "has all the answers" and yet it makes simple concepts so complicated.
i love you * Patrick voice*
I love that he repeats everything lol
thank you for these videos! im studying for my ap bio final and this helped so much
Reminder that u commented on this video 8 years ago !!😂
You are literally a life saver. Huge exam tomorrow and finally understand. Thank you so much !
15:57
got a bio test tomorrow, this just saved my life!
all of your videos got me through genetics, anatomy, and my immunology classes. thank you!
I am impressed as to how quickly and clearly the guy was able to write stuff down through a mouse/ touchpad.
Thank you. The fact that they can refer to different things and it doesn't entirely make sense made this make so much more sense. My biology professor just never bothered properly explaining the usage of those terms.
To summarise the difference between chromosomes, chromatids and chromatin:
-chromatin is the combination of a DNA molecule in a cell carrying out its day to function (synthesising proteins and hormones etc.) and histone proteins. The DNA is in a linear pattern. The cell is NOT DIVIDING.
-Chromosomes are linear, short chromatin but without the histone proteins. The cell is preparing for mitotic division during interphase. The DNA has been replicated to form a double armed chromosome.
-chromatids are the individual chromosomes of a double armed chromosome joined at a region called the centromere. Together the chromatids are called sister chromatids. After anaphase of mitosis and the sister chromatids divide, they each become chromosomes (that are genetically identical).
Well, you still do not get it imo.
Let me clear it up for you, okay?
So we all know that a cell contains an organelle called nucleus. This nucleus is the location of the genetic material (i.e. DNA). I must admit that I am not too sure if RNA is more than a nucleic acid( as in if it is also a genetic material). But to continue, the DNA is the stuff that makes up chromatin, chromosome and chromatid.
Chromatid = DNA + histones
However, this form of DNA and histones/ histone proteins called chromatin represents a lower order of organization. The chromatin is made up of long and thin threads or strands of DNA wrapped around histones to form nucleosomes. When cells are not dividing, the DNA and histones are package in this way.
However, when a cell is about to divide, the chromatin condenses ( shortens and thickens) to form strands of DNA and histones called chromosomes. In other words, chromosomes are highly condensed forms of chromatin visible under light microscope prior to cell division.
Chromatid on the other hand is any of identical strands of chromosome formed prior to cell division. Two sister/ identical chromosomes are collectively called chromosome. However each of the identical pair held at the centromere is a chromatid/ sister chromatid. When they are separated from each other, they are each referred to as chromosome.
I hope this helps.
I am Ernst Appiah, a biology tutor living and working in Accra,Ghana.
As i was watching this i thought "man, i really need to get back to studying" and then i remembered i was
Lol! same. too funny. I started watching these as they're a much more compact way of MCAT studying
I don’t understand the difference between nucleosome and chromatin
Can somebody explained?
a nucleosome is the structural unit of chromatin wrapped around histone proteins. The actual chromatin is what is wrapped around those histones.
This video is really helpful.Thanks to Khan Academy..
You should try watching animations, I find them helpful and they often go straight to the point.
I don't know why but I can't help but be happy when I watch these videos. It's different then the atmosphere at school, there is a sense of care in your voice, its almost like a family member is teaching me and not a person being paid a small amount of money. yeah.
wow...this was really helpful ....i always get confused with the vocab....thanks alot :)
I needed this so much...Just Started learning Genetics at school...I'm indeed grateful
wow .... simple yet so informative ... this lecture beats all those fancy animations .... best video ... thanks so much ... also you are very well in speaking ...neither too slow nor too fast ,....
YOU ARE AMAZING THANK YOU SO MUCH FOR HELPING ME WITH MY FINALS
great video. uncomparable. No need of all books now. just view these video. Extremely intelligent author. Thanks
it would have been nicer if the graphics were crisper
so very helpful thank you very much sal
really helpful 👍
u are the best teacher in the world!!!!!
your videos are the only reason that i pass science
This was the most helpful video of them all!
Can't believe this video is 11 year ago 😳
IB exam soon!
haven't really revised yet but this channel is useful!
loved the video. I was studying for a bio exam and something he explained wasn't clear. I spent an hour in lecture and you spent 18 minutes explaining this clearer than my professor. good stuff.
It's called teaching. Hats of you man.
Jazhak-Allah kher your all video is very useful for me
Very nice work! I think it's acutally hard to explain all this stuff in an understandable way, but you did a great job!
Thanks, very helpful as always!
I like how you bring all the little things I've learned and put it in a larger picture. Thanks.
It was the best explanation of DNA Transcription and Translation! Thank you 😍😍😍
This is really helping me with biology. I’ve watched at least 10 or more videos. Thank you
you helped me in orgo chem and now you're helping me in bio... Thanks!!!!!!!!
I've gotten to where I don't even bother with reading the textbook first. I just see what the chapter is about and find a related Khan academy video, then go from there. You're probably saving me money that would've needed to be spent on therapy. ha.
these videos are really good for the AP exam tomorrow
chromatin is basically protein and DNA complex, a special structure, where DNA is wrapped up with protein. this is so its easy to encode DNA.
this chromatin condenses to make chromosome which is coiled up DNA.
in cell division chromosome makes a duplicate of itself so there are 2 chromosomes attached together but since they are exact copies they are still called chromosome but individual copy is called chromatid. this version of chromosome only appears in cell division.
You are so helpful. I totally get it now. You make it seem so simple and easy! I'm listening to your videos now instead of listening to my professors recordings. Thank you so much!
Most of your videos are extremely helpful, and I enjoy watching them. I am studying for the TEAS 6. Super excited! But, some of the videos leave me confused, like this one. Obviously, you know what you're talking about, but you seem to scatter around often or get choked up. Please, slow down so people like myself can understand what you're saying. I rather watch a 30-minute video of you explaining the topic clearly rather than rushing through the problem. Thoroughly plan the lesson, rehearse a few times before making the video, write down what you want to say, and so on. This video seems thrown together.
Thank you so much! Your videos are carrying me through my whole BS in Health Science
this stuff help me understand what DNA is really about. Thanks u so much
I was 10 when this video was posted. Now I'm a college senior watching it.
is a very useful explaination...thanks
this video is great, makes me understand everything so easy!
you do a better job than my professor. thank you so much.
I Got an A for biology recently . It’s all thanks to you 😭
Congratulations
great explanation... very understandable and interesting way of teaching. thankyou!
Really informative! Thank you!
This saved my life ❤️ thank you so much ❤️❤️
you make more sense than my college professor.....
bless your soul
-from me (year 2020)
Thanks. It was very informative and cleared all my doubts about chromosome chromatin and chromatids
I LOVE khanacademy! Every time i look at other vids on th same topic, then I come here and it's like YES! Now you're speaking my language! Thank you!
Very helpful, thanks.
wow...I was stuck on what chromatids and chromosomes were, but you explained it perfectly
Very informative and clear and concise. Thanks
I cant thank you enough..the only video/material that explains this for me!
It amuses me to play three of his videos at the same time.
Thank you really helpful
Thanks sir, ur teaching style is next to level.actually my friend asked me this question but l couldn't answer her.But now l can.
Hats off to u sir
Thanks a lot!!! This was very helpful and cleared up the confusion for me!!!!
Thanks a bunch ❤❤❤❤ finally again khan Academy cleared my confusion😌 You guys are doing a great great work i don't know how to repay this hard work!
Thanks a lot... my grade 11 teacher speaks like a professor, so sometime i don't get what he says. You made my life easier :D
thank you! very helpful!! biology exam in an hour! good luck to me!
THAT'S AMAZING BUT INEED THE SOFTWARE NAME U USE :) THANKS A LOT
Crazy to think how different our understanding of dna is now vs when this video was made
Thanks that's extremely helpful & clears up a lot of the confusion around all these terms...
I wish you were my professor.....THANK YOU!!
This is a great video. Wish I had it back in 10th grade when I was confused about it on my AP Bio exam.
I was one simple soul who wanted to clear the confusion regarding Chromatins , Chromatids and Chromosomes. I made the mistake of watching this video and not understanding 10 percent.
Now my brain has become fried...
I feel you, this was me way back in September when I first started biology
start watching it from 9:00
Amaaazing video...clears up all doubts... thank u soo much :)
Thank you so much for clearing all of this up for me. i have a test coming up & all of this just wasn't making sense to me. Absolutely amazing at how your video makes it all so understandable & easy to grasp. THANK YOU, THANK YOU, THANK YOU!!!!!!
I love you video. Your lectures and drawings made everything from complicated to simple. you did a great job!
how is it that your better than my bio professors? i guess its the chromo color in the explanation. and an actual explanation that doesnt disappear of the overhead in 5 sec. moving on to the next... i have so many feelings at this moment.
really, it is very useful for us...thnxs
been confusing these terms all my academic life.......thanks kahn!!!
GREAT EXPLANATION, IT TOOK ME YEARS.
I always like to learn the Anatomy associated with any process before learning 'bout the actual process.this method works for me.
Your explanation is on point
Do you have a video going into leading and lagging strand 5' to 3' and then antiparallel?
The 'rungs of the ladder' are the organic bases between the double helix (A-T, C-G). So yeah, he starts off talking about them :)
Can you give me a summary about it.
Wanderful channel this is a so amezing vedios