Sexual and asexual reproductionis fundamental to life, involving the... Show more
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Subjects
Careers
Energy transfers (a2 only)
Infection and response
Homeostasis and response
Responding to change (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
World war two & the holocaust
Medieval period: 1066 -1509
1f industrialisation and the people: britain, c1783-1885
2m wars and welfare: britain in transition, 1906-1957
1l the quest for political stability: germany, 1871-1991
Britain & the wider world: 1745 -1901
2d religious conflict and the church in england, c1529-c1570
The cold war
1c the tudors: england, 1485-1603
Inter-war germany
2j america: a nation divided, c1845-1877
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
327
•
31 Dec 2022
•
Sexual and asexual reproductionis fundamental to life, involving the... Show more
This page delves into the cellular processes involved in both asexual and sexual reproduction, crucial for understanding inheritance, variation and evolution GCSE Biology notes.
Mitosis is the type of cell division that occurs in asexual reproduction and general body cell replication. Meiosis, on the other hand, is specific to sexual reproduction and occurs in reproductive organs.
Definition: Meiosis is a type of cell division that produces gametes with half the original number of chromosomes.
The process of meiosis involves:
Highlight: Meiosis introduces variation by creating gametes with random mixtures of original chromosomes.
This page explores the process of fertilization and its role in creating genetic variation, a key topic in AQA biology GCSE exam style questions B17.
Fertilization occurs when two gametes join, forming a zygote with a full set of chromosomes. In humans, each gamete contains 23 chromosomes, resulting in a fertilized egg with 46 chromosomes in 23 pairs.
Example: In humans, when a sperm cell fertilizes an egg cell , the resulting zygote has 46 chromosomes, the correct number for a human body cell.
The combination of genes in the fertilized egg is unique, leading to variation in offspring. This variation is crucial for the long-term survival of species, as it allows for adaptation to changing environments.
Highlight: Sexual reproduction introduces variation through both meiosis and fertilization, while asexual reproduction produces genetically identical offspring.
This page compares the pros and cons of asexual and sexual reproduction, an important topic for GCSE biology B13 chapter study guide.
Asexual Reproduction:
Sexual Reproduction:
Highlight: The advantages of asexual reproduction GCSE include speed and efficiency, while sexual reproduction's main advantage is the production of varied offspring.
Example: In a stable environment, asexual reproduction allows for rapid population growth. However, if the environment changes drastically, sexually reproduced offspring with genetic variation have a better chance of survival.
This page focuses on the reproductive strategies of fungi, an important topic in Combined Science Knowledge Organiser pdf.
Fungi primarily reproduce asexually through the production of spores via mitosis. These spores are genetically identical to the parent.
Vocabulary: Hyphae are thin threads that make up the structure of fungi.
Sexual reproduction in fungi occurs when conditions are unfavorable:
Highlight: Sexual reproduction in fungi can produce spores better adapted to survive adverse conditions.
This page covers the basics of plant reproduction, a key component of adaptations, interdependence and competition GCSE Biology.
Plants reproduce sexually through flowers, which contain the reproductive organs. Gametes are produced through meiosis.
Definition: Pollination is the process by which pollen from one flower reaches the female parts of another flower.
Plants have adapted various strategies to facilitate pollination:
Highlight: Plant reproduction combines elements of both sexual and asexual methods, allowing for both genetic variation and efficient reproduction.
This page provides a more in-depth look at meiosis, crucial for understanding B14 knowledge organiser topics related to reproduction.
Meiosis is a specialized form of cell division that produces gametes with half the original number of chromosomes. The process involves:
Highlight: Each gamete produced through meiosis is genetically different from all others, introducing variation.
Example: In humans, body cells have 46 chromosomes . After meiosis, gametes have 23 chromosomes each.
This final page ties together the concepts of reproduction and variation, focusing on their role in natural selection and evolution, key topics in B17 biology gcse aqa.
Variation produced by sexual reproduction is crucial for the long-term survival of species. It allows for adaptation to changing environments through natural selection.
Definition: Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.
The advantages of variation include:
Highlight: While asexual reproduction is efficient for rapid population growth in stable environments, sexual reproduction's ability to produce varied offspring is advantageous for long-term species survival.
Page 8: Family Trees and Inherited Disorders
This section explores how genetic characteristics are traced through generations and examines inherited disorders.
Example: Polydactyly, causing extra fingers or toes, is used to demonstrate dominant allele inheritance.
Highlight: Family trees help predict genetic makeup and inheritance patterns.
This page introduces the fundamental concepts of reproduction in living organisms, focusing on sexual and asexual reproduction GCSE AQA topics.
Reproduction is a vital process for passing genetic information from parents to offspring through chromosomes. There are two main types of reproduction: asexual and sexual.
Definition: Asexual reproduction involves one parent, with cells dividing by mitosis, resulting in genetically identical offspring .
Definition: Sexual reproduction involves the fusion of male and female gametes from two parents, producing offspring with mixed genetic information.
Highlight: Asexual reproduction is common in small organisms like bacteria and fungi, while sexual reproduction occurs in a wide range of living things, from single-cell organisms to humans.
Vocabulary: Gametes are specialized sex cells, such as egg cells and sperm in animals, or egg cells and pollen in plants.
App Store
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Sexual and asexual reproduction is fundamental to life, involving the transfer of genetic information through chromosomes. This comprehensive guide covers reproduction types, genetic inheritance, and screening processes in GCSE Biology.
Key points:
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page delves into the cellular processes involved in both asexual and sexual reproduction, crucial for understanding inheritance, variation and evolution GCSE Biology notes.
Mitosis is the type of cell division that occurs in asexual reproduction and general body cell replication. Meiosis, on the other hand, is specific to sexual reproduction and occurs in reproductive organs.
Definition: Meiosis is a type of cell division that produces gametes with half the original number of chromosomes.
The process of meiosis involves:
Highlight: Meiosis introduces variation by creating gametes with random mixtures of original chromosomes.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page explores the process of fertilization and its role in creating genetic variation, a key topic in AQA biology GCSE exam style questions B17.
Fertilization occurs when two gametes join, forming a zygote with a full set of chromosomes. In humans, each gamete contains 23 chromosomes, resulting in a fertilized egg with 46 chromosomes in 23 pairs.
Example: In humans, when a sperm cell fertilizes an egg cell , the resulting zygote has 46 chromosomes, the correct number for a human body cell.
The combination of genes in the fertilized egg is unique, leading to variation in offspring. This variation is crucial for the long-term survival of species, as it allows for adaptation to changing environments.
Highlight: Sexual reproduction introduces variation through both meiosis and fertilization, while asexual reproduction produces genetically identical offspring.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page compares the pros and cons of asexual and sexual reproduction, an important topic for GCSE biology B13 chapter study guide.
Asexual Reproduction:
Sexual Reproduction:
Highlight: The advantages of asexual reproduction GCSE include speed and efficiency, while sexual reproduction's main advantage is the production of varied offspring.
Example: In a stable environment, asexual reproduction allows for rapid population growth. However, if the environment changes drastically, sexually reproduced offspring with genetic variation have a better chance of survival.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page focuses on the reproductive strategies of fungi, an important topic in Combined Science Knowledge Organiser pdf.
Fungi primarily reproduce asexually through the production of spores via mitosis. These spores are genetically identical to the parent.
Vocabulary: Hyphae are thin threads that make up the structure of fungi.
Sexual reproduction in fungi occurs when conditions are unfavorable:
Highlight: Sexual reproduction in fungi can produce spores better adapted to survive adverse conditions.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page covers the basics of plant reproduction, a key component of adaptations, interdependence and competition GCSE Biology.
Plants reproduce sexually through flowers, which contain the reproductive organs. Gametes are produced through meiosis.
Definition: Pollination is the process by which pollen from one flower reaches the female parts of another flower.
Plants have adapted various strategies to facilitate pollination:
Highlight: Plant reproduction combines elements of both sexual and asexual methods, allowing for both genetic variation and efficient reproduction.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page provides a more in-depth look at meiosis, crucial for understanding B14 knowledge organiser topics related to reproduction.
Meiosis is a specialized form of cell division that produces gametes with half the original number of chromosomes. The process involves:
Highlight: Each gamete produced through meiosis is genetically different from all others, introducing variation.
Example: In humans, body cells have 46 chromosomes . After meiosis, gametes have 23 chromosomes each.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This final page ties together the concepts of reproduction and variation, focusing on their role in natural selection and evolution, key topics in B17 biology gcse aqa.
Variation produced by sexual reproduction is crucial for the long-term survival of species. It allows for adaptation to changing environments through natural selection.
Definition: Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.
The advantages of variation include:
Highlight: While asexual reproduction is efficient for rapid population growth in stable environments, sexual reproduction's ability to produce varied offspring is advantageous for long-term species survival.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Page 8: Family Trees and Inherited Disorders
This section explores how genetic characteristics are traced through generations and examines inherited disorders.
Example: Polydactyly, causing extra fingers or toes, is used to demonstrate dominant allele inheritance.
Highlight: Family trees help predict genetic makeup and inheritance patterns.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page introduces the fundamental concepts of reproduction in living organisms, focusing on sexual and asexual reproduction GCSE AQA topics.
Reproduction is a vital process for passing genetic information from parents to offspring through chromosomes. There are two main types of reproduction: asexual and sexual.
Definition: Asexual reproduction involves one parent, with cells dividing by mitosis, resulting in genetically identical offspring .
Definition: Sexual reproduction involves the fusion of male and female gametes from two parents, producing offspring with mixed genetic information.
Highlight: Asexual reproduction is common in small organisms like bacteria and fungi, while sexual reproduction occurs in a wide range of living things, from single-cell organisms to humans.
Vocabulary: Gametes are specialized sex cells, such as egg cells and sperm in animals, or egg cells and pollen in plants.
App Store
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user