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1f industrialisation and the people: britain, c1783-1885
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alicia :)
13/07/2023
Biology
CCEA GCSE biology - DNA and genetics
DNA and Variation: Understanding Chromosomes, Genes, and Cell Division in GCSE Biology
This comprehensive guide explores the fundamental concepts of DNA, genes, and chromosomes in GCSE Biology, covering their relationships, structure, and role in inheritance and variation. It also delves into cell division processes and genetic engineering.
13/07/2023
1305
Genetics is the study of how characteristics pass from parent to offspring. Each gene can have different forms called alleles.
Key Genetic Terms:
Example: In a heterozygous individual , the dominant allele will determine the phenotype.
Gregor Mendel's Contributions:
Sex-Linked Inheritance:
Genetic Screening and Engineering:
Genetic screening involves testing for harmful alleles and abnormalities.
Example: Amniocentesis is a method of genetic screening that involves taking fetal cells from the amnion for testing.
Genetic engineering involves modifying an organism's genome to introduce desirable characteristics.
Example: Bacteria cells are modified to produce human insulin through genetic engineering.
Advantages of genetic engineering:
Ethical considerations:
This comprehensive guide provides a solid foundation for understanding DNA, genes, and chromosomes in GCSE Biology, as well as their role in inheritance, variation, and genetic engineering.
39
749
10/11
GCSE REVISION GUIDE!! Aesthetic | Summaries | Visual Learners
Biology revision guide - summary of all the content
1
146
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History of Genetics Notes
Notes on the history of genetics for GCSE Biology.
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inheritance, variation and evolution
aqa biology inheritance, variation and evolution full topic notes
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638
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B6: Inheritance, Variation, Evolution
Topic Biology 6: Inheritance, Variation, Evolution knowledge organiser
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Inheritance, Variation and Evolution
Inheritance variation in evolution, biology, paper 2 active recall questions, GCSE
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Inheritance, variation and evolution
Revision mat on Inheritance, variation and evolution
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alicia :)
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DNA and Variation: Understanding Chromosomes, Genes, and Cell Division in GCSE Biology
This comprehensive guide explores the fundamental concepts of DNA, genes, and chromosomesin GCSE Biology, covering their relationships, structure, and role in inheritance and variation. It... Show more
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Genetics is the study of how characteristics pass from parent to offspring. Each gene can have different forms called alleles.
Key Genetic Terms:
Example: In a heterozygous individual , the dominant allele will determine the phenotype.
Gregor Mendel's Contributions:
Sex-Linked Inheritance:
Genetic Screening and Engineering:
Genetic screening involves testing for harmful alleles and abnormalities.
Example: Amniocentesis is a method of genetic screening that involves taking fetal cells from the amnion for testing.
Genetic engineering involves modifying an organism's genome to introduce desirable characteristics.
Example: Bacteria cells are modified to produce human insulin through genetic engineering.
Advantages of genetic engineering:
Ethical considerations:
This comprehensive guide provides a solid foundation for understanding DNA, genes, and chromosomes in GCSE Biology, as well as their role in inheritance, variation, and genetic engineering.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
DNA is the genetic material found in chromosomes within the cell nucleus. Chromosomes are thin strands of DNA subdivided into genes, which appear as functional pairs in most cells except gametes.
Definition: Genes are short lengths of DNA that code for specific characteristics.
The relationship between DNA, genes, and chromosomes is hierarchical:
Vocabulary: The genome refers to all the DNA in an organism.
DNA Structure:
Highlight: The sequence of bases in DNA is unique to each individual, making it the basis for genetic variation.
DNA Function:
Example: The process of protein synthesis involves reading the coding strand of DNA to produce specific proteins.
Cell Division:
Highlight: Meiosis is a major source of genetic variation in humans due to the millions of possible chromosome arrangements.
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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
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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
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Best app on earth! no words because it’s too good
Thomas R
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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
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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
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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
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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
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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.
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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
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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
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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
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