Why Are All Humans Unique? Meiosis: Crash Course Biology #30

Рет қаралды 103,819

Күн бұрын

Ever wonder why we aren’t exact clones of our parents, or why siblings aren’t exactly alike? The reason traces back to meiosis. In this episode of Crash Course Biology, we’ll discover how egg and sperm cells get made and learn why you’re a totally unique remix of your parents’ DNA.
Introduction: Why Are We All Unique? 0:00
Gametes 1:33
Meiosis 4:09
The Phases of Meiosis 4:44
Nondisjunction 7:14
Why We Aren't Clones 8:18
Meiosis & Genetic Diversity 9:49
Review & Credits 11:32
This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit BioInteractive.org/CrashCourse for more information.
Check out our Biology playlist here: • Biology
Watch this series in Spanish on our Crash Course en Español channel here: • Crash Course Biología
Sources: docs.google.com/document/d/1G...
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Пікірлер: 37

@sabercat5490 4 ай бұрын

I like that he included his dad into this.

@ajadinusrat1692 4 ай бұрын

Biology explains why xou shouldn't compare yourself to others, cuz we all are unique

@KGTiberius 4 ай бұрын

You are unique, just like everyone else.

@johnny_boi5456 4 ай бұрын

<a href="#" class="seekto" data-time="248">4:08</a> man, those turtle ducks from ATLA are very cute!

@AlohaParis87 4 ай бұрын

Did you just almost say/spell Atlan?? Like the name for Turtle Island

@razzar508 4 ай бұрын

I thought "Haha the spermary"... literally 1 second before He said it. God I love this series.

@3sz10 4 ай бұрын

Man, I just love this guy's presentation style. Dj gametes is the wildest metaphor I've seen in a biology lesson so far. Keep this man at all cost.

@trevinbeattie4888 4 ай бұрын

It’s not just the combination of genes that determines how an organism develops, but also the expression of those genes as affected by external environmental factors which creates an innumerable amout of additional possibilities.

@JosephGallagher 4 ай бұрын

Wish this was around when I was in high-school

@divyamodi7311 4 ай бұрын

Being randomly unique and being specially unique looks different tbh😅

@Etory-m 4 ай бұрын

Love how easy you explain. ❤

@zyrenfall 4 ай бұрын

We're all uniquely stupid and that makes each and every one of us special. Remeber that. :)

@gailaltschwager7377 4 ай бұрын

Thank you!

@venassis7749 4 ай бұрын

I really like these and the topics are interesting too

@lesley4215 4 ай бұрын

I like your video, it's fun and educational all in one!

@ughsam_ 3 ай бұрын

THANKS

@coltonreavis3514 4 ай бұрын

great video

@TheRealE.B. 4 ай бұрын

Best gag yet.

@thethirdjegs 4 ай бұрын

I believe i heard <a href="#" class="seekto" data-time="460">7:40</a> in crash course thrice already. It seems like i saw versions of this episode twice before the two earlier ones had a different host.

@darkwindwaver 4 ай бұрын

too good

@ferngirltlc 4 ай бұрын

I have a shiny Scyther XD

@adamiusmaximus6852 4 ай бұрын

cuz it's awesome:)

@suhani551 4 ай бұрын

i passed my university first semster bio with a b, if i had seen this before then i would have gotten an A haha

@user-ys7cu6kg1i 4 ай бұрын

As a twin I've wondered what makes us diffrent other than fingerprints bc our DNA is the same so cool

@abramisme 4 ай бұрын

Lol your dad did good 😅

@user-op5gc6zl6h 4 ай бұрын

I just realized.... i'm just seed😢

@hoopyfrood145 4 ай бұрын

Pretty sure turtle ducks are an ATLA reference lol

@Beryllahawk 4 ай бұрын

One in sixty four - uh - give or take a few orders of magnitude, heh Still I'm glad that I lucked out and got my dad's charm :D

@peterchiu2586 4 ай бұрын

🎉

@tamikovacs3887 4 ай бұрын

Nice video, but why does the video only refer to humans?

@pinktights747 4 ай бұрын

As I watch this I think of cats and dogs. They can have a litter, same parents whereas maybe two in the litter look similar. They can even breed with several partners and none of them look alike.😮😮😮