Chromosomes, Chromatids, Chromatin, etc.

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  • Опубліковано 22 вер 2009
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    The vocabulary of DNA: chromosomes, chromatids, chromatin, transcription, translation, and replication
    More free lessons at: www.khanacademy.org/video?v=s9...

КОМЕНТАРІ • 507

  • @njk7146
    @njk7146 7 років тому +770

    go to 9:00 to go directly to the chromosome, chromatid, chromatin part

  • @corey5454
    @corey5454 9 років тому +481

    I could cry, this channel is great. You guys are making people's lives better.

  • @merlinmystique
    @merlinmystique 4 роки тому +61

    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!

  • @motconheocon
    @motconheocon 10 років тому +39

    what make you a good teacher is your ability to identify the parts which are confusing to the students. thank you!

  • @Guwapo77
    @Guwapo77 6 років тому +121

    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!

  • @Alexxyk
    @Alexxyk 12 років тому +28

    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!

    • @pruthviredekar9665
      @pruthviredekar9665 9 місяців тому

      Hi what are you doing now .....😊

    • @Soulofindianmythology
      @Soulofindianmythology Місяць тому

      Wow you studied it 14 years ago and this comment is 12 years ago. How are you doing?

  • @MCbleach101
    @MCbleach101 9 років тому +20

    whats amazing of these videos is that if you turn on caption, the subtitles are so matching and so accurate when he speaks

  • @douglystyles
    @douglystyles 12 років тому +21

    So brilliant!! I was struggling with the 3 chromos, but it makes so much more sense now!! Thank you!!!

  • @veronicanoordzee6440
    @veronicanoordzee6440 5 років тому +24

    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.

  • @budderlover1290
    @budderlover1290 5 років тому +4

    This literally made me start crying as soon as I started getting it, thank you so much!!

  • @PutriLovatic
    @PutriLovatic 9 років тому +4

    Thank you so much, this helped a lot!

  • @FriendlyUCKids
    @FriendlyUCKids 13 років тому +2

    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

  • @kevinbongcasan8746
    @kevinbongcasan8746 8 років тому +24

    i love you * Patrick voice*

  • @kihap
    @kihap 12 років тому +1

    Very nice work! I think it's acutally hard to explain all this stuff in an understandable way, but you did a great job!

  • @arjunravikumar1
    @arjunravikumar1 9 років тому +42

    Fantastic way of teaching a very difficult subject to the students.
    From a former professor in Medical college.

  • @peterolsen5503
    @peterolsen5503 11 років тому +2

    You are literally a life saver. Huge exam tomorrow and finally understand. Thank you so much !

  • @TheAsholeenico12
    @TheAsholeenico12 13 років тому

    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!

  • @themuttzoftrz
    @themuttzoftrz 5 років тому +1

    This is really helping me with biology. I’ve watched at least 10 or more videos. Thank you

  • @felixreininghaus2808
    @felixreininghaus2808 3 роки тому

    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.

  • @joycelynnguyen8533
    @joycelynnguyen8533 8 років тому +4

    YOU ARE AMAZING THANK YOU SO MUCH FOR HELPING ME WITH MY FINALS

  • @englehartae
    @englehartae 13 років тому

    I like how you bring all the little things I've learned and put it in a larger picture. Thanks.

  • @subwayvesubscriber
    @subwayvesubscriber 5 років тому

    Thanks that's extremely helpful & clears up a lot of the confusion around all these terms...

  • @NALMassage
    @NALMassage 11 років тому +1

    Thank you so much! Your videos are carrying me through my whole BS in Health Science

  • @shesaNERD
    @shesaNERD 13 років тому +1

    all of your videos got me through genetics, anatomy, and my immunology classes. thank you!

  • @ellygreening3450
    @ellygreening3450 8 років тому +2

    so very helpful thank you very much sal

  • @marcecaro
    @marcecaro 12 років тому +1

    this video is great, makes me understand everything so easy!

  • @giedremaciene1819
    @giedremaciene1819 10 років тому +2

    Really informative! Thank you!

  • @quynhdango6
    @quynhdango6 13 років тому

    I love you video. Your lectures and drawings made everything from complicated to simple. you did a great job!

  • @mchevy13
    @mchevy13 13 років тому

    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.

  • @sukumarmukherjee3850
    @sukumarmukherjee3850 2 роки тому +1

    I needed this so much...Just Started learning Genetics at school...I'm indeed grateful

  • @michaelkashimbode7988
    @michaelkashimbode7988 10 років тому +1

    GREAT EXPLANATION, IT TOOK ME YEARS.

  • @omsanti4195
    @omsanti4195 3 роки тому +3

    Can't believe this video is 11 year ago 😳

  • @klburris22
    @klburris22 13 років тому

    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!!!!!!

  • @hannahhampton5667
    @hannahhampton5667 9 років тому +94

    THANK YOU!!!!My Biology teacher doesn't teach and i wanna punch him in the face....all the time!!! Gonna do better on my test case of you!! BLESS YOUR SMART HELPFUL SOUL!!

    • @susmitashreya336
      @susmitashreya336 6 років тому +3

      😩It also happen with me.......ufffffffff! Biology teacher

  • @jenniferchen3624
    @jenniferchen3624 4 роки тому +1

    I am impressed as to how quickly and clearly the guy was able to write stuff down through a mouse/ touchpad.

  • @DavidL999
    @DavidL999 11 років тому +1

    Thanks, very helpful as always!

  • @nanelikahya9949
    @nanelikahya9949 6 місяців тому

    You always achieve to clarify really well what is confusing for me. I appreciate your understanding and explanations so much.

  • @vmfjru47
    @vmfjru47 14 років тому

    Awesome video! I've taken biochemistry and this gives a much needed big picture to the little details taught in those classes!

  • @orangedingo1619
    @orangedingo1619 4 роки тому

    I cant thank you enough..the only video/material that explains this for me!

  • @antoineremiak8453
    @antoineremiak8453 10 років тому

    thanks you for the explanation, it helped me prepare for my exam :)

  • @zurajanaicatsurada2840
    @zurajanaicatsurada2840 3 роки тому

    bless your soul
    -from me (year 2020)

  • @kevinpolpitiya3200
    @kevinpolpitiya3200 3 роки тому

    Thanks a lot!!! This was very helpful and cleared up the confusion for me!!!!

  • @onefive10
    @onefive10 12 років тому +8

    I love that he repeats everything lol
    thank you for these videos! im studying for my ap bio final and this helped so much

    • @molinadhembla726
      @molinadhembla726 4 роки тому

      Reminder that u commented on this video 8 years ago !!😂

  • @quynhdango6
    @quynhdango6 13 років тому

    I love your video! you cleared everything up for me. I feel much better about my upcoming bio exam now. You did a great job in explaining everything so clearly, especially your drawings made complicated things seem much easier.

  • @user-ur7oe6nb9b
    @user-ur7oe6nb9b 7 років тому

    Seriously, thank you. I learned more through your drawings and clear explanations in 10 minutes then all the readings and workbooks !!! Thank you

  • @ZiggyMercury
    @ZiggyMercury 11 років тому

    It's fantastic. Made it much clearer to me. Thanks! :)
    (Also saw the DNA video, which was as great as this one)

  • @aricamp_
    @aricamp_ 4 роки тому

    Amazingly clear! Thank you, I've always found the differences among the three words (and above all between chromosome and chromatid) very hard to undestrand. This is the only clear explanation I've ever heard about it. A M A Z I N G

  • @laurasntr9301
    @laurasntr9301 11 років тому

    I like so much the way you explain the concepts, and everything so thank you.
    at the moment I´m studing this unit, that is related with the DNA, mitosis, meiosis, and your videos are very usefull for me.

  • @nirbhaydhakaan6235
    @nirbhaydhakaan6235 3 роки тому

    Thank you really helpful

  • @lonelylovehurts
    @lonelylovehurts 10 років тому +1

    Thank you so much! I have been learning chromosomes for over two years and this is the first timebi actually understood how the priteins are formed!

  • @MarieannSaidinFA
    @MarieannSaidinFA 3 роки тому

    great explanation... very understandable and interesting way of teaching. thankyou!

  • @trizzard
    @trizzard 10 років тому

    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!

  • @snigdharoy7113
    @snigdharoy7113 7 років тому

    Impeccable channel. This is the best one ever. It literally serves the purpose of my university. Loads of Thanks to the contributors, for making the logistics comprehensible to all of us.

  • @salamaemad4098
    @salamaemad4098 7 років тому

    Thank you so much, it helped a lot!

  • @resonatingvoice
    @resonatingvoice 13 років тому

    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 ,....

  • @syraha5002
    @syraha5002 12 років тому

    wow...this was really helpful ....i always get confused with the vocab....thanks alot :)

  • @TheHurpyDerpy
    @TheHurpyDerpy 12 років тому +1

    The thing with this is that , it's not boring to study this way!

  • @janaidaclemente3480
    @janaidaclemente3480 Рік тому

    This was the most helpful video of them all!

  • @giggyjuju
    @giggyjuju 13 років тому

    DAH! I'm so happy I found this but wish I'd found it earlier, you're awesome!

  • @jcmjub
    @jcmjub 7 років тому

    THANK YOU SO MUCH!!!

  • @limjinen9435
    @limjinen9435 3 роки тому

    thank you so much !! this video did clear up a lot of my confusion about this topic 😭😭❣️❣️

  • @msxanby
    @msxanby 12 років тому

    IB exam soon!
    haven't really revised yet but this channel is useful!

  • @mirrorreflex
    @mirrorreflex 12 років тому

    You should try watching animations, I find them helpful and they often go straight to the point.

  • @edmondbere2471
    @edmondbere2471 7 років тому

    You're the man ... Everything is clear and easy to understand 👏🏻👏🏻👏🏻

  • @awesomesause78
    @awesomesause78 9 років тому

    this helped me out alot thanks

  • @debbiesaha
    @debbiesaha 13 років тому

    This is a great video. Wish I had it back in 10th grade when I was confused about it on my AP Bio exam.

  • @khoshalsaidy526
    @khoshalsaidy526 7 років тому +1

    Thank you siR. #respect

  • @emmagao8642
    @emmagao8642 2 роки тому

    Love it :) Thanks so much for the clear explanation of the 3 terms that sound so similiar!

  • @elmanahmed6117
    @elmanahmed6117 10 років тому


    This video was very helpful. THANKS!

  • @warningsky8615
    @warningsky8615 3 роки тому +1

    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!

  • @Daffy711
    @Daffy711 11 років тому

    thank you...

  • @xLOVEtee
    @xLOVEtee 13 років тому

    you're amazing at explaining! thanks so much :D

  • @sunnivoraalfaiz3660
    @sunnivoraalfaiz3660 4 роки тому

    Jazhak-Allah kher your all video is very useful for me

  • @syedayaanraza2361
    @syedayaanraza2361 3 роки тому

    Thanks. It was very informative and cleared all my doubts about chromosome chromatin and chromatids

  • @davedawson8044
    @davedawson8044 11 років тому

    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.

  • @thejellyfish206
    @thejellyfish206 10 років тому

    Thanks this helped a ton

  • @shinexshon3981
    @shinexshon3981 Рік тому

    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

  • @chirantanmahanti2627
    @chirantanmahanti2627 6 років тому

    Amaaazing video...clears up all doubts... thank u soo much :)

  • @attaulmomin
    @attaulmomin 4 роки тому +1

    I always like to learn the Anatomy associated with any process before learning 'bout the actual process.this method works for me.

  • @fateater77777
    @fateater77777 13 років тому

    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.

  • @thegardian888
    @thegardian888 Рік тому

    Thank you so much, that is very clear

  • @CindyArzola
    @CindyArzola 13 років тому

    I love the way you explain everything, great job!!!!

  • @enisavatnikaj8332
    @enisavatnikaj8332 4 роки тому

    Such a useful lesson. Thank you! ❤️

  • @infernoatk
    @infernoatk 7 років тому

    Thank you Sal

  • @asiandiana6257
    @asiandiana6257 Рік тому

    This saved my life ❤️ thank you so much ❤️❤️

  • @OnkelBeeenji
    @OnkelBeeenji 11 років тому

    Thank you! If my textbook was half as explanatory as your vid, learning would always be a joy!

  • @MmePaquerette
    @MmePaquerette 9 років тому

    Thank you so much!!

  • @YashikaHAMASHIACH
    @YashikaHAMASHIACH 11 років тому

    you helped me in orgo chem and now you're helping me in bio... Thanks!!!!!!!!

  • @eljahsiemallah
    @eljahsiemallah 13 років тому

    Very informative and clear and concise. Thanks

  • @yuxuanong4710
    @yuxuanong4710 11 років тому

    Your lessons are simply amazing!!! please make more dna replication videos!!!!

  • @melrl5260
    @melrl5260 8 років тому +3

    you beautiful soul. thank you

  • @Shakti9451
    @Shakti9451 6 років тому

    Sir thank you so much....i literally can't explain you how much it helped me....

  • @EssejVideos
    @EssejVideos 11 років тому

    been confusing these terms all my academic life.......thanks kahn!!!

  • @solianaz9847
    @solianaz9847 5 років тому

    Thank u so much that helped alot

  • @pknmnm2
    @pknmnm2 11 років тому

    thanks so much,it's really clear!you re smart!thanks!

  • @Raymond9030
    @Raymond9030 13 років тому

    this stuff help me understand what DNA is really about. Thanks u so much

  • @CdotDixon
    @CdotDixon 14 років тому

    Thanks sooo much for this!

  • @chasevibes8222
    @chasevibes8222 5 років тому

    Your explanation is on point

  • @CT--gs1wj
    @CT--gs1wj 8 років тому +1

    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

  • @pepperpie88
    @pepperpie88 14 років тому

    thanks for explaining the vacab esp for chromatin, chromosomes, and chromatids!!! i am having a test this afternoon on this and i'm not having a nervous breakdown over this.