Phases of Meiosis
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- In this video Paul Andersen explains the major phases of meiosis including: interphase, prophase I, metaphase I, anaphase I, telophase I, cytokinesis, interphase II, metaphase II, anaphase II, and telophase II. He explains how variation is created in the next generation through meiosis and sexual reproduction.
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All of the images are licensed under creative commons and public domain licensing:
File:Karyotype Color Chromosomes White Background.png, n.d. commons.wikimed....
File:Mars-Male-Symbol-Pseudo-3D-Blue.svg, n.d.
"File:Sky Spectral Karyotype.png." Wikipedia, the Free Encyclopedia. Accessed March 7, 2014. en.wikipedia.or....
File:Venus-Female-Symbol-Pseudo-3D-Pink.svg, n.d. commons.wikimed....
ScienceGenetics. Español: Espermatozoide Fecunadno a Óvulo., June 25, 2010. Own work. commons.wikimed....
Unknown. English: A Sperm Cell Fertilizing an Egg Cell, [object HTMLTableCellElement]. www.pdimages.co.... commons.wikimed....
This is the man that's been there for me when no one has. Thank god for his existence or else I wouldn't be able to maintain an A in biology.
What are u doing these days
@William Greenwood well well well, if it isn't the father of Zachary Greenwood
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I was the 1000th like. I feel special.
It's like teachers try to hide how easy it is to learn this stuff instead they do like 2 weeks of lecturing and after watching this I've learned more
icy knight lol my teacher is great
ROFL it does seem like that sometimes.
I think the real problem comes down to pace. Everyone works at a different pace and unfortunately when learning in a classroom or lecture you can't. So as soon as you don't understand something, you can't rewind a video or pause it, you have to try and catch up and so then everything spirals out of control and you end up learning bits of pieces of the lecture but not being able to understand anything fully. I spent a good 8 - 12 min on this meiosis video (after first learning mitosis), went at my own pace, and I understand everything. WE ALL WORK AT DIFFERENT PACES
I think the real problem comes down to pace. Everyone works at a different pace and unfortunately when learning in a classroom or lecture you can't. So as soon as you don't understand something, you can't rewind a video or pause it, you have to try and catch up and so then everything spirals out of control and you end up learning bits of pieces of the lecture but not being able to understand anything fully. I spent a good 8 - 12 min on this meiosis video (after first learning mitosis), went at my own pace, and I understand everything. WE ALL WORK AT DIFFERENT PACES
@@EvsPersonal K.
Chromosomes: 0:52-1:51
Centrosomes: 1:52-2:12
Interphase I: 2:12-3:02
Prophase I: 3:02-3:58
Metaphase I: 3:58-5:35
Anaphase I: 5:35-5:41
Telophase I: 5:41-5:46
Cytokinesis and overview of meiosis I: 5:46-6:04
Prophase II: 6:04-6:11
Metaphase II: 6:11-6:19
Anaphase II: 6:19-6:24
Telophase II and cytokinesis: 6:24-6:32
Overview of meiosis and before/after comparison: 6:32-6:46
Review of phases with diagram: 7:22-8:11
Level 100 boss
Bio freak
u r a legend thank you
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My hero
You make my life like 7 million times easier than it would be. I was absent and missed my bio lecture. I have a quiz tomorrow and thanks to you I'm going to get an A.
Advaita Naik I'm happy to hear that the video was helpful. Your life must be pretty easy now that it is 7 million times easier. :)
Bozeman Science same here. i have a test and a presentation on the hole dna synthesis both on the mitosis and meiosis. u made my life less miserable. i bow and take off my hat for u sir...
Really..
I have two quizzes tomorrow and I finally get it! Visually seeing it and talking me through is awesome! I want to be a marine veterinarian, so I have to know this information!
+fabulous fallow up! passed the test, tore apart biology like it was nothing , and now i am a medical student.
A literal god among men. A being of pure science has descended to the earth in order to spread his knowledge so even a numskull like me can understand him perfectly and actually remember the lesson.
omg i cannot even begin to express my gratitude for you making these lessons available on youtube, thank you so much! you make it seem like doing bio as a major isn't too difficult, which unfortunately, is not the case
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Dr. Krab 😂
Hank green + John green = this guy
was thinking exactly the same thing man
that's meiosis
Qais Jan lol
Greens - fluff = Paul Andersen
+ Laci Green
Mr Anderson's ability to demonstrate and explain all the scientific / biological processes terms is so superb. He does it so well and it just sticks with you no matter how hard the material seems, Mr. Anderson makes everything seem learn-able!! Thank you so much for your amazing help and videos!
Mr. Anderson has no idea how much he's helped me in passing this horrible biology class. THANK YOU
I have literally watched about 15 videos on meiosis and this is hands down, the best explanation there is. Great visuals and a thorough explanation of the process.
I believe one of the many reasons why these videos are so helpful is because when you watch these, you aren't in the classroom environment, and therefore you're actually focused on the teacher rather than any distractions! nevertheless, great video! thank you for making my AS level that much easier!!
Wish u were my bio teacher
You're my hero. You're literally helping me through the MCAT more than my $400 set of books are. Wish I found you earlier
Mr Anderson, Your students are extremely lucky to have a teacher able to articulate advanced concepts in an easy to understand way. Your videos have taught me more than my actual professor has. Your students are AP and get college credit, right? I'm in 2 college bio classes (my uni splits it into separate classes for all science majors) and without your help, studying would be extremely tedious! I can only imagine the number of people who would not have been successful without your videos. Just by your view counts, I can tell that you are making a HUGE difference in student's success at a (probably) global level. That's awesome! You're the best!!
My bio exam is tomorrow, why didn't anyone tell me about this guy before D:
U probably smell bad
in my ap bio class we use these video as hw & do notes & summaries on them, they help a lot !!!
Kris Kringle lol i laughed so hard i almost got in trouble... I was supposed to be working
3 years later and im asking did u ever pass ur bio exam?
because u started studying 1 day before exam like me and it is the first time u r watching bio videos like me.. i am also here 1 day before exam
I didn't do A-level biology, now I'm studying Medicine. This has REALLY helped, so thank you!
Are u done with medicine
Took my professor 2 hours to explain meiosis, when you did it in 8 minutes. I have a better understanding of it after watching your video, than when my prof. taught it.
can this guy by my teacher for every subject! he explains things so well!!!!!!
FINALLY someone who actually makes sense! i went into this knowing that it was easy but for some reason could not get it in my head right. Thank you for finally clearing this up!
He has such a clear way of explaining things sooo simply
You're such a big help Mr Andersen, thank you for being so concise and simplifying things!
Thank you so much! My midterm is on Monday and we just finished learning this chapter on Wednesday so I've been panic cramming and this is the only video that's explained things clearly. You are a life savor!
Actually searched tons of videos and read tons of articles to reduce my confusion about this topic. You helped master
So much better at explaining it than my professor! Thank you so much! 🙌🏽
9 years later and your still helping me
Suddenly life makes sense
These are the greatest. You've been helping me since Freshman year biology in high school. Still helping me today as a Pre-Med student.Thank you!
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fucking high school why need i know this shit!?:
Wowwwww!!!!!! Thank you sooo much for all the amazing information. You’re helping me sooo much, so genuinely thank you. May God bless you and your family🙏❤️!
Literally just watching these is helping me so much for my ap bio midterm, thanks!!!
I am really bad at biology... These videos help a lot. Eight minutes of my time teaches me more than a 45 minute lecture.
+Helios On Roblox completely agree... Idk why in lectures biology seems like a different language but this guy explains it extremely well.
i have a biology test on wed on meiosis! perfect timing!!
Mr. Anderson is the kind of person who was meant to be a teacher. Some teachers just get it! Thank God for him!
my bio teacher just shows us these
your 8 minute video made me understand it way more than 3 weeks of lectures.
I spent 2 hrs of class not understanding a thing and now i can tell metaphase 1 from 2 by just studying for 8 mins. Wow.
I love how your videos are so short but they still cover each and every thing
Very nice explanation, enjoyed this thoroughly
This has to be the best meiosis video I’ve seen
Awesome video! It's by far the best I've come across. Thank you lots and lots for making these videos for us...it's much appreciated :)
I'm studying to pass a registration exam for doing a masters in experimental biology, and sofar you have been one of the best professors i have had in my life.
Thank you so much for making science way easier. I was so confused until I watched this video
i watched more than a dozen videos and they lost me on all of them. only this fellow explains things in a way i could understand. bravo!!
Ngl this is the video that just helped meiosis click for me, 10/10
No but literally this demonstration was more helpful than 2 weeks worth of biology classes. Thank you so much everything makes much more sense now :)
it is very helpful. It will be very helpful for my tomorrow's exam
After DAYS of searching for a clear explanation, I come upon this and strike GOLD. To say thank you seem trite, but thank you--I appreciate this so much!
lol you saved my genetics test thanks to you!!
Teacher explained it for the same length of time but left me more confused than I already was, random guy on the internet explains it and it is completely understandable
whats a meiosis in a cats body - meowsis
+Donald Duak what do you call when lots cats stack together-- meowtain
fat
burn in hell
You made me laugh so hard I stubbed mitosis
Donald Duak year of the joke😂😂😂
I really don't know how to say this, but I've understood celular division better with you than with my 3 different teachers during my 3 years of university. Thank you!
why cant you be my teacher for everything. Im only 10 yrs old but i have such a strong passion for science and math and i watch your videos for reference and learning all the time. You make everything 10 milllion times easier. I just wanted to say a HUGE thanks for all your work +Bozeman Science
Extremely helpful. Your videos are so well done. Paul is an excellent teacher. Thank you.
of course it was helpful)thank u very much!
Sheldon Cooper is kept awake at night knowing that his intellectual superior, Paul Anderson, is out there teaching science better than Sheldon can even imagine.
I'm on Team Paul.
You forgot to say something pretty important. They became 4 hapliod cells
Can an X chromosome form homologous pair with y chromosome (of a male's cell)? Can crossing over occur between X and Y chromosomes of a cell in meiosis-1? If yes, how to decide/identify which of the resulting 4 chromosomes in meiosis-2 is an X or a Y chromosome?
The two words that comes with great gratitude are" thank you" really sir.... Your lectures. Helps me a lot in studies...
Hi Mr. Anderson, can you create resources like test materials that would ease high school students and relieve their stress? If you can publish them, that would be an extremely helpful support, especially, for those who have impeding health issues. Thank you!
I don't know who your are, or where you come from but I know one thing, you are the real MVP. Even though English is not my native language it is amaaaaazing how easy and smooth you explain the topics in your videos. Thank you for making these videos! Number One Teacher on TH-cam!
Biology AS level students where you at?
ItsMichaelAkin A2 now 🎉🎉🎉🎉
here my man
@its me Haha I'm in 3rd year of uni now. All the best to you! Biology is a great subject
best explanation ever sir. meiosis could not be explained in an easier way than this.
I love these videos!
You sir have saved my life multiple times and by multiple times I mean every time I take a biology test. Looks like I'm going to be getting that 5 on the AP Test.
its really helpfullll. thank u so much
Just no one explains it better that you do. Thanks please
When are the chromosomes getting haploid?
In mitosis the chromatids where separated and they remained diploid...here...there is crossing over.. But finally the chromatids are separated...so when exactly is the cell getting haploid?
After meiosis II. The difference is that the DNA isn't replicated during this phase, so in mitosis you actually end up with 92 chromosomes after S phase, then they are split into 46 for each diploid cell. During meiosis two the 46 chromosomes in each diploid cell that is produced by meiosis I are split at the centromeres producing 23 chromosomes for each haploid.
You are the most helpful person to ever walk this planet. God bless sir.
How come we start meiosis with a pair of chromosomes from each parent when meiosis itself occurs before fertilization? Plz answer
I think when he says a pair of chromosomes from each parent he means the person's parents- let's say this was happening in your body, the pair of chromosomes would come one from your mom and the other from your dad. you would form four daughter cells which have only haploid (23) chromosomes that will later fuse with your partners cell to form a zygote- with 46 chromosomes (or 23 pairs)
thank you so much you explained this so much better than the Discovery Techbook!!!
why did i watch this even though i understand meiosis?
Can an X chromosome form homologous pair with y chromosome (of a male's cell)? Can crossing over occur between X and Y chromosomes of a cell in meiosis-1? If yes, how to decide/identify which of the resulting 4 chromosomes in meiosis-2 is an X or a Y chromosome?
This helped me so much I'm in 8th grade and we are learning 10th grade stuff and my science teacher made it seem that mitosis is easy but meiosis isn't, your video really made me understand the concept of meiosis. Thank you so much.
thanks alot
Little detail but still good for an overview, ty
I'm in college-level anatomy and physiology 2 and it's been a while since I've gone over this. Definitely a good, quick review
You are the bet biology teacher out there!!!! keep on providing help, Mr. Anderson!!!
It was helpful, I wish there was more detailed, it was kind of rushed, and you lacked using terminology like sister chromatids and homologous chromosomes when needed, but thanks.
Thank you so so so much. You just saved my test grade, hope you have a nice life
I loved this, I just had one question...doesn't the spindle apparatus attach to the kinetochore NOT the centromere? I learned that the two are not the same term, the centromere connects the homologues/sister chromatids together, and the kinetochore is a protein bundle that is the site of attachment for the microtubules in the spindle apparatus?
Yes, but the kinetochores are near/on top of the centromere. The centromere is a region where the two sister chromatids are attached but the spindles are attached to the kinetochores in this general region.
stumbled onto your vids when i started taking pre-chem in 2015. i'm abt to transfer finally to state college and you have been one of my best friends!! ty, Mr. A.!!!
OMG thank you sooooooooooo much. You have helped all of my friends do good in biology. No one understood the teacher, but when I saw you video, I was saved. Thank You sooooooo much.
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Pambaba
This was the most enriching 8 mins I've spent on youtube
It was a little helpful. I wish I could grasp it. Agh. Why do I find this so confusing?
This was a better explanation than what was explained to me in university and it only took 8.5 minutes. Thanks!
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Baklaaa
Oh wow, the process is a lot easier than expected. My teacher is more so on the lecture without diagrams and such so I get lost a lot but now that I can actually see what’s going on, I definitely have a much better grasp on this concept. Thank you :)
well done!....just how like my steak
this is what I was searching ......sir, this is really the best and easiest video for meiosis..Thank you so much sir
Not my proudest fap
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SYDNEY FIELDS that would be a fucking smart child to understand AP bio😂
you're an over salted pretzel
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Yes, Mr. Anderson, that was helpful. Very much so, sir, thank you very very much
my professor explained it better....just kidding.
you make it very simple and straightforward to understand, thank you
chromoZome
This video single handedly helped me understand far more than in lecture
Can people stop talking a language called science 😭
CLOROX BLEACH How was ur final exam
You're saving lives here! Literally none of this made sense to me until I watched your video
Was this helpful? I should say so. Thanks for helping a lot of us do a better job of teaching this material. I can explain things but my drawings are less clear than I would like. (Wildly understated!) I hope you are making tons of money from the ads that precede your videos. You have earned it, along with the gratitude of many.
This was so helpful i have a test today and I’m not gonna stop watching
Thanku so much for making the video I have literally seen around 25 videos explaining meiosis and most of them with fancy animations in 3d and none of them make sense I am finally able to grasp the concept throughly thanks a lot
I remembered all the small things because of you what I have learnt earlier......
Thank you so much.......