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6
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DT
12/8/2025
Psychology
Mitosis and Meiosis
462
•
Dec 8, 2025
•
DT
@djt9
Ever wondered how your body creates new cells for growth... Show more








Your body constantly creates new identical cells through mitosis, and it happens in four precise stages. Think of it like a perfectly choreographed dance where chromosomes move in specific patterns.
Prophase kicks things off when the nucleolus disappears and the nuclear envelope breaks down. Centrioles migrate to opposite ends of the cell to form the spindle apparatus, which then attaches to chromosomes and guides them towards the cell's centre.
Metaphase is when all chromosomes line up perfectly along the metaphase plate (the cell's equator). The spindle fibres hold them in place, creating a neat line across the middle of the cell.
💡 Remember: Metaphase = Middle! All chromosomes meet in the middle of the cell.
Anaphase begins when centromeres divide, separating sister chromatids. These chromatids are then pulled to opposite poles of the cell by shortening spindle fibres.

Telophase is essentially prophase in reverse. The separated chromatids (now called chromosomes again) reach opposite poles, nuclear envelopes reform around each set, and chromosomes begin to uncoil whilst the nucleolus reappears.
Cytokinesis is the final step where the cytoplasm actually divides to create two separate cells. In animal cells, this happens through a cleavage furrow that forms around the cell's middle.
The cytoskeleton pulls the membrane inwards until it fuses completely, physically separating the two new cells. This process ensures that both daughter cells receive equal portions of cytoplasm and organelles.
💡 Key Point: Mitosis + cytokinesis = one parent cell becomes two genetically identical daughter cells.
The end result? Two cells that are genetically identical to the original parent cell, perfect for growth and repair.

Unlike mitosis, meiosis creates four genetically different cells from one parent cell. This two-part process is essential for sexual reproduction and happens in your reproductive organs.
Meiosis I is called the reduction division because it separates pairs of homologous chromosomes into two cells. Each intermediate cell ends up with only half the chromosome number (haploid instead of diploid).
Meiosis II works similarly to mitosis, separating the chromatid pairs in each daughter cell. This creates two more cells from each of the intermediate cells, giving you four haploid cells in total.
💡 Remember: Meiosis = "Me-I-oh-sis" = "My-oh-my, four different cells!"
Prophase I starts like mitosis with chromosome condensation and nuclear envelope breakdown. However, something special happens: homologous chromosomes pair up to form bivalents, and chiasmata form where chromatids cross over and entangle.

Metaphase I differs significantly from mitosis because homologous pairs line up along the metaphase plate rather than individual chromosomes. The orientation of each pair is completely random, creating independent assortment.
This random arrangement means different combinations of maternal and paternal chromosomes can end up in each daughter cell. Independent assortment is one of the key mechanisms that creates genetic variation in offspring.
Anaphase I sees homologous chromosomes pulled to opposite poles, but unlike mitosis, sister chromatids remain attached. The chiasmata from crossing over create recombinant chromatids where genetic material has been exchanged.
💡 Exam Tip: Remember that in Anaphase I, whole chromosomes move (chromatids stay together), but in mitosis, individual chromatids separate.
This crossing over means sister chromatids are no longer identical, creating even more genetic diversity through new combinations of alleles.

Telophase I follows the standard pattern: chromosomes assemble at poles, nuclear membranes reform, and chromosomes uncoil. Cytokinesis then creates two haploid cells, each containing half the original chromosome number.
Meiosis II begins with Prophase II, where chromosomes condense again, nuclear envelopes break down, and spindle formation starts. This stage looks very similar to mitosis prophase.
Metaphase II arranges individual chromosomes on the metaphase plate, just like in mitosis. However, because crossing over occurred in Meiosis I, the chromatids aren't identical anymore.
This means independent assortment happens again in Metaphase II, creating even more genetic variation. The random arrangement of these genetically different chromosomes adds another layer of diversity to the final gametes.

Anaphase II works exactly like anaphase in mitosis. Sister chromatids separate at their centromeres and get pulled to opposite poles by shortening spindle fibres.
Telophase II sees chromatids assembling at the poles, chromosomes uncoiling back into chromatin, and nuclear envelopes reforming. The nucleolus becomes visible again, just like in mitosis.
The final cytokinesis divides both cells, creating four daughter cells in total. These cells are haploid (containing half the chromosome number) and crucially, they're all genetically different from each other and from the parent cell.
💡 Big Picture: Meiosis transforms one diploid cell into four genetically unique haploid gametes ready for fertilisation.
This genetic diversity comes from two main processes: crossing over during Prophase I and independent assortment during both Metaphase I and II. These mechanisms ensure that every gamete you produce is genetically unique!

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
DT
@djt9
Ever wondered how your body creates new cells for growth or how gametes are formed for reproduction? Cell division is absolutely crucial for life, and there are two main types you need to master: mitosis (which creates identical cells for... Show more

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Your body constantly creates new identical cells through mitosis, and it happens in four precise stages. Think of it like a perfectly choreographed dance where chromosomes move in specific patterns.
Prophase kicks things off when the nucleolus disappears and the nuclear envelope breaks down. Centrioles migrate to opposite ends of the cell to form the spindle apparatus, which then attaches to chromosomes and guides them towards the cell's centre.
Metaphase is when all chromosomes line up perfectly along the metaphase plate (the cell's equator). The spindle fibres hold them in place, creating a neat line across the middle of the cell.
💡 Remember: Metaphase = Middle! All chromosomes meet in the middle of the cell.
Anaphase begins when centromeres divide, separating sister chromatids. These chromatids are then pulled to opposite poles of the cell by shortening spindle fibres.

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Telophase is essentially prophase in reverse. The separated chromatids (now called chromosomes again) reach opposite poles, nuclear envelopes reform around each set, and chromosomes begin to uncoil whilst the nucleolus reappears.
Cytokinesis is the final step where the cytoplasm actually divides to create two separate cells. In animal cells, this happens through a cleavage furrow that forms around the cell's middle.
The cytoskeleton pulls the membrane inwards until it fuses completely, physically separating the two new cells. This process ensures that both daughter cells receive equal portions of cytoplasm and organelles.
💡 Key Point: Mitosis + cytokinesis = one parent cell becomes two genetically identical daughter cells.
The end result? Two cells that are genetically identical to the original parent cell, perfect for growth and repair.

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Unlike mitosis, meiosis creates four genetically different cells from one parent cell. This two-part process is essential for sexual reproduction and happens in your reproductive organs.
Meiosis I is called the reduction division because it separates pairs of homologous chromosomes into two cells. Each intermediate cell ends up with only half the chromosome number (haploid instead of diploid).
Meiosis II works similarly to mitosis, separating the chromatid pairs in each daughter cell. This creates two more cells from each of the intermediate cells, giving you four haploid cells in total.
💡 Remember: Meiosis = "Me-I-oh-sis" = "My-oh-my, four different cells!"
Prophase I starts like mitosis with chromosome condensation and nuclear envelope breakdown. However, something special happens: homologous chromosomes pair up to form bivalents, and chiasmata form where chromatids cross over and entangle.

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Metaphase I differs significantly from mitosis because homologous pairs line up along the metaphase plate rather than individual chromosomes. The orientation of each pair is completely random, creating independent assortment.
This random arrangement means different combinations of maternal and paternal chromosomes can end up in each daughter cell. Independent assortment is one of the key mechanisms that creates genetic variation in offspring.
Anaphase I sees homologous chromosomes pulled to opposite poles, but unlike mitosis, sister chromatids remain attached. The chiasmata from crossing over create recombinant chromatids where genetic material has been exchanged.
💡 Exam Tip: Remember that in Anaphase I, whole chromosomes move (chromatids stay together), but in mitosis, individual chromatids separate.
This crossing over means sister chromatids are no longer identical, creating even more genetic diversity through new combinations of alleles.

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Telophase I follows the standard pattern: chromosomes assemble at poles, nuclear membranes reform, and chromosomes uncoil. Cytokinesis then creates two haploid cells, each containing half the original chromosome number.
Meiosis II begins with Prophase II, where chromosomes condense again, nuclear envelopes break down, and spindle formation starts. This stage looks very similar to mitosis prophase.
Metaphase II arranges individual chromosomes on the metaphase plate, just like in mitosis. However, because crossing over occurred in Meiosis I, the chromatids aren't identical anymore.
This means independent assortment happens again in Metaphase II, creating even more genetic variation. The random arrangement of these genetically different chromosomes adds another layer of diversity to the final gametes.

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Anaphase II works exactly like anaphase in mitosis. Sister chromatids separate at their centromeres and get pulled to opposite poles by shortening spindle fibres.
Telophase II sees chromatids assembling at the poles, chromosomes uncoiling back into chromatin, and nuclear envelopes reforming. The nucleolus becomes visible again, just like in mitosis.
The final cytokinesis divides both cells, creating four daughter cells in total. These cells are haploid (containing half the chromosome number) and crucially, they're all genetically different from each other and from the parent cell.
💡 Big Picture: Meiosis transforms one diploid cell into four genetically unique haploid gametes ready for fertilisation.
This genetic diversity comes from two main processes: crossing over during Prophase I and independent assortment during both Metaphase I and II. These mechanisms ensure that every gamete you produce is genetically unique!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Unit 6 review
Study guide on chapter 8, theories on how people develop over a lifetime. Information was from the textbook Introduction to Psychology by Hawkes Learning and supplemented by my professor's resources.
This section is about the brain and how it works
Explore Bowlby's monotropic theory of attachment, focusing on the internal working model, social releasers, and the impact of early relationships on parenting. This mind map covers key concepts such as secure and insecure attachment, the law of continuity, and the critical period for forming attachments. Ideal for students studying attachment theory and its implications in child development.
Explore the findings of various studies on attachment types, including Jin (2012), Simonella (2014), and Van IJzendoorn & Kroonenberg (1988). This summary highlights the proportions of secure, insecure avoidant, and resistant attachments across different cultures, emphasizing the impact of cultural practices on attachment styles. Ideal for students studying attachment theory and its cultural implications.
unit 6 review
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Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user