Why Do We Have Different Blood Types?

Why do humans have all kinds of different blood types? What is A, B, AB and O all about?


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[Matoustar]

I learned more in these two minutes than in two months of biology class...

[bread]

I read this somewhere



Type O blood was actually type zero (0) blood but someone misread it as "type O blood"

I guess it was a

*_typO_*

[jonahchurch]

I got a B- on my blood test. Any tips to get an A?

[feybart]

The title of the video is unanswered. I know what blood types are now, but what is the evolutionary reason for having blood types?

[averageballfan]

*Hello and welcome to the comment section*
40% Corny jokes
3% random comments
27% Questions about blood type
30% My blood type is (letter)

[squirtfartjr]

I don't know what blood type I am...

[avnerim]

O+
Does having different blood type makes you immune to some types of sickness? Like type A people don't get cold? Or type O- rarely gets sick at all.

[Seeker]

WE DEMAND 3 LIFE NOGGIN VIDEOS A WEEK. BLOCKO, MAKE IT HAPPEN!

[elijahronningen]

I'm O- I donated blood once now I'm going back again. The blood bank won't leave me alone

[navysaw]

Now that's something you can teach your Bio teacher. Thanks a lot Life Noggin team!

[laneyh]

I’m A+, but O+ is most common followed by A+, then B+, then O- ( the universal donor), then A-, then AB+, then B-, and then finally AB- being the least common. As above there are 8 blood types for humans. There is a lot more I want to and could say but I am trying to keep this short. I just know a lot about blood and like talking about it. 😊

[Darshanaz]

I'm O- But they refused my blood because i have a tattoo, their loss.

[elliedołowy]

I'm getting a blood test tomorrow because I don't know if I'm anemic, but I'm scared. Wish me luck! :(

[dahboo]

I learned recently I have B- and that this type is pretty rare. I was excited I had rare blood but then I remembered that means it will be harder for me to find blood if I ever need it

[Mackeye_]

i have A+

no wonder i do so well on tests!

[kevinjordan]

Video suggestion- why do we have different skin colors

[Trinity_Primaris]

Im o- so that means im important. Finally, my life has value!!!

[typat]

You explained that we have different blood types, maybe why we can label different blood types as what they might be a, b, o (+, -) etc. Why did we develop different blood types is something you should look into.

[Tofofoso]

But this doesn't answer WHY. It just shows we DO, and explains it. Kinda misleading title, somewhat dissapointind :/

[mehdiouabas]

You just explained this 100 times easier and better than my science teacher, thank you very much?