We make pinned comments for clarifications or corrections. Some updated versions of textbooks are using a more detailed definition of molecular sequences making up the centromere - which means that when you have a chromosome with replicated chromatids - you could consider it to have two centromeres (one per sister chromatid) although they are bound together in a region. Many textbooks still refer to a single centromere on a chromosome with two fully attached sister chromatids - as they are considering the complex where the centromeres are attached - and then they show fully separated sister chromatids with their own centromere. While we have done this as well by illustrating one centromere per eukaryotic chromosome, we think it is important to understand this complex is where they are joined with cohesin in the case of sister chromatids - as well as also understanding how the definition of centromere has changed. You can see a conversation about this here: twitter.com/AmoebaSisters/status/1192621868605419520 It would have been better for us to have said "centromere region" - and again, when sister chromatids are attached at the centromere region, it is still counted as one chromosome. If we update this video, we'll probably feature this information about the centromere and we'd like to improve our drawing to show the bound centromeres. -------- Other things to note: just as we mention in our video about Punnett squares with sex-linked traits, we want to add this here too: there is more detail to sex determination than just sex chromosomes and more combinations possible than XX and XY combinations. We have some further reading links you can check out linked in the other video and we also want to paste in some of the examples from that description here: XXY: www.genome.gov/Genetic-Disorders/Klinefelter-Syndrome XYY: medlineplus.gov/genetics/condition/47xyy-syndrome/ X: www.genome.gov/Genetic-Disorders/Turner-Syndrome Info about SRY gene & also conditions related to variants in SRY gene: medlineplus.gov/genetics/gene/sry/ -------- We appreciate the comment that there was a point in the video where one of our chromosomes had sister chromatids that didn't match in our illustration! It has been corrected. (Sister chromatids should be identical) -------- This is not our only playlist about chromosomes- we have a heredity playlist here! kzread.info/head/PLwL0Myd7Dk1FVxYPO_bVbk8oOD5EZ2o5W Also, you can find resources that go with our videos here www.amoebasisters.com/handouts

@testacals

2 жыл бұрын

Did you guys fix the video ? I can't see any difference (except the highlight) in those chromatids .

@thienly102

Жыл бұрын

I love your videos but i have to keep pausing and rewinding to think because it's too fast.😥

@EthelPriscaKumbanga

3 ай бұрын

? 0

Amoeba sisters and crash course are literally the reason im making it through college!!

@sho-kq8hc

3 жыл бұрын

@@ashwikasingh4967 same

@Pihu_1810

2 жыл бұрын

class 10th boards

@hanamohammed7450

2 жыл бұрын

And ninja nerdddd

My teacher makes his salary off these videos

@jjj-nz8sf

4 жыл бұрын

butter than having salary while she/he is setting in the chair

@shaniangelie

4 жыл бұрын

DNDwiggins 😂 me too

@alibehzad1699

4 жыл бұрын

😂😂😂😂😂

@jakegonski4591

4 жыл бұрын

Especially now bro since quarantine

@teddytsoromocos3796

4 жыл бұрын

@@jakegonski4591 Learning an entire bio unit from the Amoeba sisters lmao

When a 7-minute youtube video teaches you more than your teacher can in 50 minutes

@nightblade6962

4 жыл бұрын

Facts

@carlasaab1288

3 жыл бұрын

Not 50 minutes, make it 2 months

@daniellelopez3683

3 жыл бұрын

fr

@tammywilmans4351

2 жыл бұрын

perhaps you didn't listen in those 50 minutes. I use these videos in class often. But there is no denying that students don't always pay attention in class. Many of my students love these videos, and many have asked me not to show them as they understand my way of explaining better - I now use both formats to hopefully reach more students.

@minions2350

Жыл бұрын

Stating the truth there

I am a 5th year medical student .. karyotyping was always confusing me ..and i was so shy to ask my professors ...thank u for clarifying this

@badenclosson8195

3 жыл бұрын

So then maybe you can help clarify it to me... a karyotype is the shape of the chromosomes or how they look?

@aryareddy3377

3 жыл бұрын

@@badenclosson8195 A karyotype is a chart that shows the number and visual appearance of the chromosomes in the cell nuclei of an organism or species.

@aryareddy3377

3 жыл бұрын

@@badenclosson8195 so you would need a karyotype - for example - to confirm that you had a trisomy, or maybe a monosomy or things like that, also to check for other types of mutations

@seeratkhan5505

3 жыл бұрын

Is it important to study cytology in medical?

@expertise2103

2 жыл бұрын

shouldve got it down by 9th grade freshman year, like i did. *smirks

Amoeba Sisters University... I would attend. Y'all have taught me so much I might as well get my degree from y'all instead

@1_-Uzi-_1

4 жыл бұрын

Tessa SAME

@jessiedos3917

3 жыл бұрын

LITERALLY

I've got to say...I began biology at the start of this year and absolutely dreaded it! Just recently I found the Amoeba Sisters and found biology more entertaining and found myself wanting to learn more. This channel has done a phenomenal job helping people understand complex studies and teaching in a family-friendly environment. Keep up the great work!

@nathansfunland3875

Жыл бұрын

Ikr!

My teacher plays your videos in class whenever we start a new topic

@shauntaybelton1153

6 жыл бұрын

Im Legit mines too

@MachineWashable101

5 жыл бұрын

Im Legit same

@sanctuary6054

5 жыл бұрын

me as teacher lol

@animeandstuff5377

5 жыл бұрын

if only every teacher did lmao but nah instead we gotta listen to dum lectures that boring and uneducating af lmao

@animeandstuff5377

5 жыл бұрын

@@sanctuary6054 if im a teacher ever imma give a list of youtube videos i used to learn from on the topic so even if im shit they always have youtube

I really love how simplified yet accurate and fun these videos always are. Thank you.

I have been struggling with the whole cell phase in general and genetics with chromosomes and Karyotypes. Your videos have helped me so much this semester because you easily explain everything in a very simplistic way that makes sense and is clear to understand! I am so grateful for you guys, thank you so much for your amazing videos!

Thank you SOOO much for this!!! I have literally spend my entire life trying to figure out why two sister chromatids are still a chromosome, and you explained it so simply. These videos are the best!

I have a final today. These videos have helped me immensely to gain an idea of what’s going on, then my required readings make more sense than they would had I not found this channel. The drawings are also great. Thank you.

It's been an 1hour since I discovered this channel.....and now I am a fan . GREAT WORK AMOEBA SISTERS

God I cannot put in words how much I love your videos! They help me understand complicated concepts so much! Please never stop making such videos!

Thank you! I ironically have my test on this in... about 40 minutes. Quick and easy to understand review! Life saver♡

@lolaenay

6 жыл бұрын

Stargazorlily how did it go?

@user-tl5lk3oy1n

4 жыл бұрын

how did it go lmao

@gamingwithdanger1538

4 жыл бұрын

Its good

@kaitling6527

3 жыл бұрын

Ayo how did it go?

@eastaeg

Ай бұрын

how did it go?

I already knew all of this, but I'm gonna compliment on a very good video! Very easy to understand explanations about how all of this works and how to understand it, that someone who didn't know much about it before could follow along. A perfect video to show kids in school, and from the comments it looks like plenty of teachers have!

I finally found a video that explains this subject perfectly! Thank you!

In this pandemic,you've come as a KZread angel to save lives,,thank you

So i found this channel.. AND IT’S LIKE STUMBLING ON A GOLD MINE!! YIPEE!!!!!

I love your videos. I am actually taking a Human Heredity class and this helps a lot. I am a visual learner so this is perfect and much nicer than powerpoints!

Everyone of these videos I watch, I always write new ones down. Thank you, amoeba sisters!😊

This is the most useful channel existed in history of youtube!!!!! I wish this can expand to different topics. Either way, keep up the good work!!!!!

i love the way u share ur stories with us, and it makes me happy we both had the same misconceptions. plus the way u teach is so enthusiastic. u don't sound dead or like a robot and speak really slowly and it helps me process the informations. sending lots of love :)

love these videos. thanks for clearing up some things for me in a fun and enjoyable way! keep it up!

Great work Ma'am! After spending more than 4 days on internet I found this kind of video exactly explaining my queries. Thanks a ton! I thought only I was having these kind of doubts regarding no. of chromatids during metaphase and issues with 2n chromosome. This become further difficult to understand when you are not a bio student. Excellent work again! Thanks a lot!

Thank you! You hit all of the things that have confused me throughout my biology classes (like when things are called chromosomes vs. chromatids)!

These were the exact doubts I was having since many years and I didn't get answer in any one of the youtube videos but I got it from you so thank you so much

woah, you literally single handedly made me invested into biology, great stuff!

I'm a teacher and this video made me so happy. Really appreciate all the hard work you've put here to give quality education to all students of biology :-)

Today began my personal journey of learning more about DNA coding. Thank you for creating videos of which are easy to watch, follow, and understand.

I have never laughed so hard to an educational video. I died when it started talking about eyes making stomach acid. This channel is awesome. XD

this was super helpful! Im a very visual learner and my professor is all talkie and no pictures. I needed this

Thank you for these videos Amoeba Sisters! They really help me with my Biology Class. 😊

This video explained so much in a short amount of time and was easy to understand.Thank you

you are trully incredible, i am sure that almost 90% of students dont undestand de graphic of the karyotype because the problem on the counting of chromosomes, you have clear a doubt that i have had for years, thanks

this is so fun to watch while learning, the illustration itself is so helpful to visualise and understand while it also gives entertainment.

Thank you!!! This really helped to clear up a lot of confusion about chromosome shape.

This channel is simply THE BEST!!!!

Me stumbling across this channel like I was looking for help.. But friggn found the Amoeba Sisters dis do be the best discovery ive ever made

I've literally done all of my exam revision with youtube... When a video teaches you more than your teacher does

my teachers would explain this lesson in like 50 minutes. it's insane how you explained everything so well in just 7 minutes

Ok I definitely fell in love with those videos. Thank you so much!!!

GOD. You totally understand the questions that made me so confused. University professors should adopt your videos to play in lectures.

Thank you so much for these videos. The explanations and animations are great. They have helped me better understand my human genetics class.

Amazingly explained chromosomes and how they are counted! Thanks so much!

This video rocks!! thank you guys this is exactly the information I need for my bio exam! :D

You ladies are amazing!!! Thank you Thank you! I’m a teacher and this really helps me better explain to my students!!!

Love you from the bottom of my heart . 😍😍got this clear after a long time

i just love you ♥ you answered all my questions that no one did before

I actually stumbled upon this channel by accident, but I'm SO glad I did. You explain stuff SO much better than my college Biology teacher. Subscribed! P.S. I love the animations

@person1945

5 жыл бұрын

hey @ryan emery, are you a college student? like you mean UNI? & if you don't mind me asking can I know what are you studying?

@embarrassingusername7125

5 жыл бұрын

First to not say "I got this channel from my class"🤣🤣🤣

thank you so much for this video..... I have been always confused about chromosomes for years..Our teacher don't pick up common misconceptions...but you did..It was really helpful !!! :)))))

i litterally love you, i was so confused about chromosomes and chromatids and this popped up

Thank you guys so much! I'm starting reading materials from a high school book, but a lot of the information is confusing or partial. Just like the way they described chromosomes!

My teacher plays your videos in class. Great channel and a quick and easy to learn.

I really love this channel, very unique, simple way of explaining biology

thank you for making this complicated topic really easy to understand!!!

These channel is awesome in one word.

i really like your videos, they are funny but most of all they explain stuff really well

Hooray for the Amoeba Sisters! My students love you.

Best explanation I have found on this subject.

your videos are very informative. specially when you talk about misconceptions.

Just got to say amoeba sisters is saving my life🙏

Thanks I have a test on this next week and u really helped me out on the studying!

Mel and I found this content very helpful!

Y’all are literally saving me

I have watched this entire play list a good 5 times now

You're doing a great job 👍 I've no words to say how helpful this is... tq amoeba sisters😇😇

Thank you so much for this animated vedio..I could clear most of my doubts

watching this for my bio final in 3 days. literally life saving

This is the video I really need to solve my problem. I was sooooo confused about the numbers of chromosomes. But one thing I'd like to add is the reason after the duplicated chromosome is still consided one chromosome is because it still contains only one set of infomation. ( read it from our textbook.) Thanks Amoeba Sisters. This really helps

THANK YOU x 1 000 000 for addressing the annoying tendency of showing chromosomes only as they exist after DNA replication and not how they are "most of the time" in the cell. Thank you for all your excellent video content.

Love your videos. I’ve been watching alll morning!

Dude,this makes studying biology even more fun because of this illustrations. I'm studying Cytogenetics,Anatomy & Physio, Bio-chemistry and Bio-statistics because University are mostly online now. Pdf's makes me sleepy sometimes.

i’m too adhd to focus in class these things save my life thank you so much

ABSOLUTELY!!!...ABSOLUTELY!!! LOVE YOUR VIDEOS. you wouldn't believe the amt of difficulties I went through regarding this representation of chromosomes in karyotype. thank you for existing🥰🥰

I have you on Notification, but it didn't tell me about this or any of your other videos :-( (/cries) Anyway, cool video, loved it!

Wauw THANK YOU, I did not understand how to read this karyotype at all, I thought that the pair's where the sisters for way to long.... This video rocks!

I LOVE UR VIDEOS!!! I always earn so much from u guys it’s honestly amazing! Thanks to you I’m passing my bio lectures

I am a neet aspirants and can u believe me..bec of these online classes I can't understand a word but if I do score good in neet I am definitely gonna recommend others of this channel..this channel deserves so much more ❤️

ugh thank you. I was so confused why karyotypes only showed one chromatid!!

I'm not really good at writing in English so my comment í going to be written in Vietnamese😅 Em là một học sinh lớp 9 tại Việt Nam. Tại nước em, các học sinh lớp 9 sẽ tham gia vào kì thi học sinh giỏi về 1 bộ môn mình yêu thích và em chọn môn sinh học. Thật may mắn làm sao khi em đã đậu quận và được dự thi vòng thành phố. Và ngày thi thành phố ấy chỉ còn 12 tiếng nữa là đến rồi. Tìm thấy một kênh youtube giải thích cặn kẽ, dễ hiểu và dễ thương về Sinh học đã giúp em bớt lo lắng và thoải mái hơn rất nhiều. Trên hết, em còn được tổng hợp tất cả kiến thúc về sinh học phân tử nữa chứ. Thank you, Amoeba Sister❤❤❤❤

This was the most important video ever

I like these videos 10x better than Crash Course

@j.l5463

5 жыл бұрын

Man, both are great

@hangettingstronger

5 жыл бұрын

I don't know why a lot of y'all want to make everything a competition... both are amazing in their own way.

Thanks a lot, Ameoba sisters. I can't explain in words how much I have benefited, Now only I understood fully about Chromosome and chromatid count. very nice explanation

Amazing way to explain complex topics .... thanks for yr effort . ♥️♥️

Thank you.... One of the best vids

Omg absolutely love your videos there so easy to follow and understand and the drawings are so cute

I love this channellll

4:02 I am so thankful for this!!! My god you're my hero

I LOVE ITTT THIS IS JUST JUST AMAZINGLY SIMPLE. I GOT EVERYTHING ❤❤

I LOVE YOU GUYS, THIS VIDEO READ MY MIND. IM HONESTLY IN AWE

Thank you very much, you make that topic so easy understandable:)

It looks like you're the only one that understands my confusions and misconception. I had a lot of confusion regarding these monad and dyad chromosomes. You solved it, as always. Oh! I am in love with you 😍😍. Thanks a lot.

@alexg3268

5 жыл бұрын

thats wierd

I owe you my degree

Thank you so much guys. You are fantastic. You clear my biggest doubt thank you soooooo much😘😘

Your explanations were quite confusing but eventually I got it. Thank you :)

Awesome explanation👍🏻

these animations are top-tier damn

Thankuuuuuuu , for so long I was confused between chromatids & chromosomes 🙏🙏🙏

I am from Costa Rica, and i am teacher of sciences. I really think it are the better videos for to teach sciences tha i have seen in my live. Really GOOD JOB !!! You are a geniuse. I am sorry for my english, in reality i dont know this languaje.

@AmoebaSisters

2 жыл бұрын

Thank you so much!! Pinky got to visit Costa Rica for the first time this June. Such a beautiful country with so much biodiversity - we love Costa Rica!! We wish you a wonderful school year!