Best Meiosis Video Ever

A thorough and well organized explanation of this amazingly unique biological process.

This is a high school and middle school version of this process.(It is arguable one of the best meiosis videos on YouTube, but that statement is openly contestable).

Try to make your science classes more interesting by showing it to your teachers!

If you have any questions or comments, feel free to message me. Enjoy.

Category:

Science & Technology

Tags:

• Meiosis
• The
• Beginning
• Best
• Video
• Ever
• Biology
• Mitosis
• Chromosome
• Crossing
• Over

[jfrymanr123]

the chromosomes double and cross over in meiosis I... after their split in meiosis I you have two cells with 46 chromosomes genetically different than the original cell. Meiosis II is the splitting process fron 2n to n.... or from diploid to haploid.

[nubmaster27]

@jfrymanr123 I would double check your notes, after meiosis I the new daughter cells are haploid and only have 23 chromosomes each. The homologous chromosomes split up during meiosis 1. Meiosis II is the process of the cells halving their DNA content, so losing one half of their DNA content when the chromosome splits and the sister chromatids split into two different cells. Does this make sense?

[TheHockeyHawk]

note that cells are not haploid until after meiosis II occurs, meiosis I is almost identical to mitosis thus resulting in diploid daughter cells.

[nubmaster27]

@TheHockeyHawk I would recheck your notes, I'm pretty sure that after meiosis I, the cells go from being diploid (2n) to haploid (n) because remember that the homologous chromosomes split up. Ploidy is about the amount of chromosomes you have, not the amount of DNA content.

[LMacK94]

@nubmaster27 but don't the chromosomes divide again after meiosis 1, meaning that they are still diploid?

[nubmaster27]

@LMacK94 remember that during meiosis 1, the homologous chromosomes split into two new daughter cells. So for example, you've gone from having 23 chromosomes from mom and 23 from dad in one cell, to now two haploid cells that only have 23 chromosomes made up from a combination of dad or mom (it is random how they split up). Think of meiosis 2 as mitosis, so all the chromosomes are doing are splitting up their sister chromatids to 2 new daughter cells. Does that make sense?

[hebrux]

anyone else realize how long the explanation was? the kid finally got it when he became an adult ( lol the kid grew up at the end of the vid)

[dmcarefuldriver]

@nubmaster27 thanks for explaining this! i wasn't understanding diploid and haploid before

[sdseals2076]

I like the fact that the kid was grown and still in elementary school living with his mom before he got the point.

[FirstAct115]

what the fuck holiday?

[crazyforcocoa101]

So helpful! Thank you so much! Got a test tomorrow and this really helped

[waqasdaagh]

thanx



[megacrazyfighter]

God this is an awkward, yet helpful video...

[goetzshane]

this is a really great explanation, thanks to whoever made this video, you're a bro

[SpiritGun666]

Anyone else hear the empty can noise?

[Wanda7771]

@MidnightBizzle If THAT's all EVOLUTION means, (growth/development)--then it shouldn't be such a hot-button issue now, SHOULD IT?Of course we all know that its much more than that now, DON'T WE?Maybe its all about how ORTHODOXY RULES and anyone who disagrees can take a flying leap, eh?

[MidnightBizzle]

@jfrymanr123 Actually, the first division is the splitting process from 2n to n, not the second.

You begin with 46 chromosomes, 1st division yields two daughter cells with 23 chromosomes each, which is a haploid number. The second division simply splits each of these 23 chromosomes into 2 sister chromatids. The total yield is 4 haploid daughter cells with 23 chromatids each.

Going from pairs of chromatids to single chromatids is not the same as going from diploid to haploid