Multiple Alleles (ABO Blood Types) and Punnett Squares

Learn how to set up and solve a genetic problem involving multiple alleles using ABO blood types as an example! This video has a handout here: www.amoebasiste...
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: www.amoebasiste...
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: openstax.org/d...
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TRANSLATIONS:
Hindi Subtitles Credit: Alisha Aggarwal
While we don't allow dubbing of our videos, we do gladly accept subtitle translations from our community. Some translated subtitles on our videos were translated by the community using KZbin's community-contributed subtitle feature. After the feature was discontinued by KZbin, we have another option for submitting translated subtitles here: www.amoebasist... We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
Thank you to both Yuemeng Li and Yuyan Cai for Chinese subtitles!
Thank you to Hawn for Vietnamese subtitles!

[@AmoebaSisters]

We learned something new that we want to pin here! In our location, the blood type without A or B antigens is written as letter "O" pronounced "oh." But in many countries, it's written as zero "0" called zero/null.

[@i_am_me1238]

Why can't you 2 be my biology teachers??? :(

[@autumndavis5514]

Thank you. I always appreciate your videos. Amoeba sister are very talented and smart. God is good.

[@anacletocazar5173]

Thank you, speaking amoeba you are the one planet earth's wonders! i don't want to greet your cousins the viruses they may carry something verry bad for me.

[@Uaperm283]

A B AB O IN HISTORY IS A B C D

[@xxnikita_bearxx6916]

@@i_am_me1238 because she doesn't work at youre school

[@carennicolelano4979]

Months ago I watched all of amoeba sisters’ videos just cause. Never did I think that I will choose Biology as my major in college but here I am now. I just wanted to say thank you. Your videos really helped me grasp and understand the concepts easier!

[@linazahmoul6956]

Thats really cool. I want to major in biology one day.

[@Parker_Garage]

Why can't you be my biology teacher??? 😕😢

[@zakusa9891]

you dont get everything handed to you

[@demonicsushiz2515]

Zak Usa I think it was rhetorical

[@eisaabdulla3004]

maybe she is :)

[@zurielkim1508]

cuz i cant

[@malakahmed9643]

life is not a wish-granting factory

[@roman20353]

"You're in the wrong veins buddy" lol

[@honquewastaken2298]

nice photoshopped profile picture

[@kelpyg1713]

What do you mean photoshopped? Lol

[@noelrodriguez6625]

These vids are pretty darn awesome! My biology teacher has been showing these vids to introduce us to new topics, keep em coming! Really enjoying these cuts lessons ^^

[@noelrodriguez6625]

*cute

[@jessblair2834]

I'm here as a college genetics student. Really appreciate the presentation of this content. I know it's probably not aimed at me but it is hitting where it needs to. Thanks.

[@elenahernandez8594]

Love your graphics style! They are adorable and educational.

[@neileoZz]

these animations are just great, it really makes science less boring and keeps me from completely zoning out xD

[@thenhewonders]

Thanks so much, Amoeba sisters :D I was reading this in my textbook and I was totally lost. Then I checked your channel, found this great video, and it all made sense! :)

[@clairenime]

Have an exam in a few hours and needed the reminder on how blood type punnet squares worked. Now If it shows up I know not to be worried.

[@gianmatute25]

Love your videos my 7th grade science teacher show your videos in my class we love it keep on the good work 😄

[@marissagutierrez7214]

I love your videos .. I honestly think I learn more from you sisters than I do from my actual classes! Thank you! :D

[@crystalimitator]

These vids are actually awesome. I'm 15 and these are good. They are informative and funny and have loads of references for children as well. I recommend this for almost all teachers who teach science. (Just not the mean and boring ones, no offence)

[@crystalimitator]

***** whateva kiddo.

[@norceenhamdi]

Nathan Jones lmao you must be a mean boring biology/science teacher to be actually annoyed by this

[@savannahwoodard6441]

Videos like these are getting me through my Genetics class this summer! Thanks guys!

[@azkachaudhry1957]

my bio teacher needs to take classes from you......your videos are always amaxing nd hilarious too....thank u so much.......and make more videos......

[@nikkimorris5765]

Can't get enough of the dynamic duo!

[@designedaura2277]

Thanks sis 😄 you done all my concepts easy and understandable 🥰☺️

[@nikahesari3139]

you guys save my life I want to thank you guys so much your videos are the only things I understand

[@princessfouzi3286]

Yo loved it.. These videos makes the concept easy to understand... Graphics are just adorable

[@arctistarfox]

The Rh Factor gene actually codes for the presence or absence of the D antigen. An Rh+ has the D antigen, and an Rh- doesn’t have the D antigen. The term “Rh” comes from the Rhesus Macaques the antigen and gene were found in first. Credit to TedEd for the name of the antigen and the little tidbit about its discovery. Edit: grammar

[@josemaldonado4577]

I like how you make everything so easy to understand.

[@AlexaBoksiner]

Wow this helped so much for my test tomorrow! Biology is so fascinating!!

[@haseebmirza8426]

It's really fun to learn from this channel 🙋🏻‍♂️

[@alifyazhafira3248]

Really... THANK YOU!

[@esian07]

Thanks, guys for the help. Ready for my punnet square test tomorrow!

[@gerardosantillan9771]

I was so worried about my exam today since I missed the day we covered this and I am so much more confident now, thank you so much!

[@lovemyself5969]

The animations make it really fun Thankyou so much

[@jaydu6109]

I was watching this in school with my teacher since its fantasticly educational and I love this cause It has some funny jokes

[@bebbuphoem0924]

I love ur videos a lot,Amoeba sistahs help me to understand biology better THANK YOUUUU!!!😍

[@uriventura9237]

You make biology enjoyable . Love the animations in your videos.

[@sridharvats4370]

This really helped me for my exam. Thanks!

[@tamzidrahman2673]

Thank You so much so I can pass my biology test

[@AmoebaSisters]

Tamzid rahman Glad we could help, Tamzid!

[@tamzidrahman2673]

Thank You so Mich for helping me pass my biology test

[@ceciliabixenman1446]

Thanks for helping pass bio

[@chrisiasunny4387]

I like your narration. Its so nice and funny!!!

[@hedgeearthridge6807]

My parents are A and B, and I ended up being AB+ But if I remember right, that switched baby thing actually happened. They used blood typing to sort it out, just like the video shows.

[@oishi4394]

Mine too.

[@charlesrobbins6414]

The word predictions on your almost to last slide there, was misspelled. I just thought I would point that out is all. Lol! Nice video though. I really like the Amoeba Sisters. They're awesome.

[@stephaniemiller5165]

They were called by God to do this work....Amoeba Sisters Rock all over the Country... I mean look at those views...1,212,403 Go Amoeba sisters may God continue to bless your hearts for being the crimdalacrime of Biology, now I must rewind so I can get it clearly I was typing lol.

[@jasminsanchez5230]

These videos help me soo much! Thanks!!!

[@Monjistha]

Fabulous animation 💜💜

[@aboas4gambles602]

lol felt like i was in middle school again but it was worth it. thanks!

[@natashaevans6379]

Great explanation! Thank you so much!

[@BADGAYAN]

Did somebody tell you. You the best.

[@kylablanco9190]

tysm for this!! ❤️ really love your contents

[@radhalavanya8730]

your channel is awesome😊😊😊

[@justinwilliams4771]

TYPO, at 6:39, you will see that "predictions" is spelled "predicitions"

[@AmoebaSisters]

+Justin Williams You are absolutely right! You may be our first to catch it! We wish there was a way to fix it, but it would destroy the link. Hoping for a day when KZbin changes that ability... :)

[@karenreynolds8348]

Awesome!! Love this! Great way to simplify it and make it easier to understand!

[@juancisneros2667]

Great Video!

[@johntindell9591]

Thank you so much

[@bettylong4963]

literally learnt more in a 7 mins vid than an hour's lesson, TYSM

[@johntindell9591]

very helpful video! Thank you very much

[@simranqureshiclass12secb2]

good job , keep it up

[@simranqureshiclass12secb2]

ok

[@Roostapha]

Absolutely fantastic! :-) Made me laugh at 55 seconds! :D Thank you very much! x

[@AmoebaSisters]

Roostapha ^__^ We're so glad you found it entertaining! Thanks for watching!

[@Roostapha]

Thank you both so much. I had a 3 hour biology exam yesterday and you helped me feel so confident about it. Your enzyme characters are on it, all the way in the UK! Thank you. Wishing you all the best in all that you do. :-) x

[@alexaceprioto3585]

so cuuuuuuuuuute and easy to understand❤

[@jasminanil5411]

Amoeba Sisters :) LOVE UR VIDEOS :)

[@jenevievechacon728]

I wish my teacher will explain like this :< it is not boring and adorable.

[@snipingdrone4711]

The amoeba sisters mlp oc has me cracking up

[@AlexisFaithBaby]

I'm in college and this is so helpful! Thank you!

[@AmoebaSisters]

AlexisFaithBaby So glad we could help! Thanks for watching!

[@scienceboy2737]

Can i use this for my online class?thanks

[@sarikaseth3506]

Amazing!!!

[@shadowfreak5613]

Love it :D my daugther and i enjoyed it ^^ Thanks

[@hannahasano2359]

U GUYS MAKE BIOLOGY FUN! lolol

[@thisismyname7284]

loved it! thank you

[@camillaclay5422]

This is why I’m passing biology

[@noahwiinblad1666]

Thank u ist really help me

[@heartsylvester964]

Thanks now I know and I love sylvester 💖

[@eholl6722]

Hi Amoeba Sisters! When will your next video come out?

[@sarah821]

is AB a case of codominance or incomplete dominance?

[@rataneajbour2061]

شرح جميل و مبسط

[@emmee432]

I have a question. How do you solve a punnet square with one or both parents with the phenotype AB?

[@AmoebaSisters]

Emily L. Great question! So you would put a "A" coefficient on one I and a "B" coefficient on the other I. Here's an example of one parent (mother) set up like that! The other parent in this example is a type B. www.biology.arizona.edu/human_bio/problem_sets/blood_types/graphics/02t.gif

[@emmee432]

***** Thanks, that was helpful!

[@shellyedmb117]

I'm such a nerd cuz I always loved doing punnett squares just for fun 😂😂😂

[@loveh6094]

Anyone else with 0 blood? Join the club :)

[@lunablue2012]

Me and my husband and children.

[@anger_birb]

Rh factor is a mood...

[@Nicole-ov7kd]

'Your in the wrong veins buddy ' pff lol- ¶°¶

[@saxophonistballerina]

Me maman tus videos (That means; Your videos are awesome in mexican)

[@redangelalvarez6979]

I would like to asked, Is it possible that Type O mother and Type AB father could have an AB blood type son?

[@lightfurya2087]

I have no proteins on my blood. Or I probably do but none that are mentioned in the video

[@katherinerivas2603]

I don't really comment on videos but I just wanted to take the time to say thank you amoeba sisters. Your videos helped me refresh biology concepts that I have forgotten since I graduated college. Thanks to your videos, I passed my biology praxis exam so thank you.

[@Bat_Thief]

how does this have more likes than their pinned comment.

[@AparajitaSandhu]

I'm O+ve, who else is?

[@joshuawicks6534]

It's the most common blood group, I have it

[@hanason3082]

Anime eyes, My Little Pony, Count from Sesame Street, Inspector Gadget... the references are abundant in this video!

[@emmamathewson4564]

ANIMEEEEEEEEEEEE

[@jdfkalfd]

GO MLP

[@Mahesh-sf7dg]

Not mlp 😑

[@oishi4394]

💜💜💜💜💜

[@aysasiddika7349]

Japanese

[@poolcezanne8259]

Great! ... I learned more from here than my paid teachers. Really!

[@chuckrambo4689]

yes, this channel is the only real teacher at my school

[@jairus5091]

Basically what will get you through college or university.

[@anjalimourya2255]

Yaa... u r right

[@dniilii]

Me after understand inheritance of blood groups in 7 minutes: I have the comprehensive ability of a hundred men.

[@helliscozy6180]

The B is about to get beat by the police officer

[@user-uj5zs1kb8x]

The genetics part starts at roughly 3:30 mins.

[@astrawboory]

I'm getting ready for my Science Field Day and I needed to learn about Heredity for it. I was really scared till I found this playlist, you guys saved me and my team. You make complicated concepts seem oversimplified and easy to learn. Thank you so much!

[@damiouschic657]

you guys do great job. I love biology and even if I wouldn't, you would have helped me get to it for sure!!! keep going💟

[@tinytica1398]

I love the Amoeba Sisters! Always informative and helpful. I am in college and I'm not ashamed to say that these videos have helped me study for tests. Thank you sisters! Stay cute and adorable!

[@AmoebaSisters]

tinytica13 You are SO welcome! Thank you so much for the heart-warming comment! ^o^

[@yogirlqueent3593]

I’ve been sick almost all week and I’ve got an exam in my AP bio class the day after tomorrow and you just saved me. You ladies are doing an amazing job, I wouldn’t know what I would do without you guys! 😅☺️

[@eeshapopat4067]

I’m in ap bio too😂 decided to take it as a senior. I have a test tmrw first period and relearning some concepts bc my teacher sucks.

[@phos_cos]

9 years later and yall r still coming in clutch

[@tomjunior4548]

Why has the body evolved to defend against other bloods?

[@unrealgalaxy9669]

bruh this channel deserves 10s of millions of subscribers......srsly underrated. keep up the god work tho!!

[@kittythecat6090]

UnrealGalaxy “keep up the *god* work tho”

[@khantzawhtet6896]

Don't be sad O blood persons, We can always donate everyone and don't need complicated stuff like antigens, Which means we are independent on our own.

[@vkr373]

Thanks u guys, everyone says that 0- is a useless blood type.😊😊😊😊😊😊😊😊

[@B3bita1215]

Always such a great learning experience with you sisters :) Thank you!

[@AmoebaSisters]

+B3bita1215 That makes our day!! Thank you so much for watching! :D

[@Eva-zr9bh]

Who’s also here cause of online clases

[@f0rgz]

Anyone else dying inside because they rewatched this six times to get notes down? Just me? Okay...

[@bobsackjones6811]

1:28 I was edging and that pushed me over

[@nataliagodfrey2511]

Thank u so muuuch, now I could finally hand in my Bio assignment. It's not even funny, I'm so dead.

[@anugyashekhar2161]

I am thrilled to see that you got every content I find difficult in my syllabus. The best part is I can totally relate and understand you. Wish I found you earlier. Love you😍

[@dailydoseofunease2218]

My bio teacher always recommends us to watch your videos and now I understand why, thank you so much because all the topics are super clear and the videos are fun!