06-10-2026, 11:52 AM
[center]![[Image: f7425727a00677ab09f8a74a82f827b9.jpg]](https://i127.fastpic.org/big/2026/0610/b9/f7425727a00677ab09f8a74a82f827b9.jpg)
Biology Igcse Course Unit 18
Published 6/2026
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Language: English | Duration: 1h 9m | Size: 1.56 GB
Variation and Selection
What you'll learn
In this course students will learn exactly what they need to know for their Biology IGCSE exams. Students will learn about
1. Describe variation as differences between individuals of the same species
2. State that continuous variation results in a range of phenotypes between two extremes; examples include body length and body mass
3. State that discontinuous variation results in a limited number of phenotypes with no intermediates
4. State that discontinuous variation is usually caused by genes only and continuous variation is caused by both genes and the environment
5. Investigate and describe examples of continuous and discontinuous variation
6. Describe mutation as genetic change[/center]
7. State that mutation is the way in which new alleles are formed
8. State that ionising radiation and some chemicals increase the rate of mutation
9. Describe gene mutation as a random change in the base sequence of DNA
10. State that mutation, meiosis, random mating and random fertilisation are sources of genetic variation in populations
11. Describe an adaptive feature as an inherited feature that helps an organism to survive and reproduce in its environment
12. Interpret images or other information about a species to describe its adaptive features
13. Explain the adaptive features of hydrophytes and xerophytes to their environments
14. Describe natural selection with reference to
(a) genetic variation within populations
(b) production of many offspring
© struggle for survival, including competition for resources
(d) a greater chance of reproduction by individuals that are better adapted to the environment than others
(e) these individuals pass on their alleles to the next generation
15. Describe selective breeding with reference to
(a) selection by humans of individuals with desirable features
(b) crossing these individuals to produce the next generation
© selection of offspring showing the desirable features
16. Outline how selective breeding by artificial selection is carried out over many generations
17. Describe adaptation as the process, resulting from natural selection, by which populations become more suited to their environment over many generations
18. Describe the development of strains of antibiotic resistant bacteria as an example of natural selection
19. Outline the differences between natural and artificial selection
Requirements
Access to a device to watch lessons - phone, tablet, or computer No textbook needed - everything is covered in the course
Description
This Biology course is structured specifically around the latest Cambridge IGCSE and GCE Biology syllabus, ensuring complete and accurate coverage of every objective students need to master for their examinations. Students preparing for AP Biology, IB Biology, or equivalent international curricula will also find this course highly valuable for building a thorough understanding of the theory component of their exams, as the core biological concepts covered are closely aligned across these specifications.
The course focuses onUnit 18: Variation and Selection, a unit that connects genetics, evolution and ecology in a way that examiners love to test across all papers. From continuous and discontinuous variation to mutation, natural selection, selective breeding and adaptive features - every syllabus objective is covered in full, with zero gaps.
Every syllabus objective is covered comprehensively, without overloading you with irrelevant material. The content is precise, focused, and directly aligned with what examiners expect - so you spend your time learning exactly what matters and nothing that does not. Throughout every lesson, real past paper questions are used to show you how this unit is examined, what a full-mark answer looks like, and the common mistakes that cost students marks every single year. You will know not just what to say, but how to say it - and equally importantly, what not to write.
The course builds strongexam technique alongside content knowledge, covering every question type across Papers 1, 2, 3 and 4 - from multiple choice and short answer to structured and extended response questions. Students leave this course knowing exactly how to approach any question on this unit regardless of how it is worded.
Every video lesson comes with adownloadable PDF resource that contains everything you need to know for that specific lesson - definitions, diagrams, key points and exam tips - all written and structured to match exactly what the syllabus requires. There is no need to open a textbook, search for revision guides, or look anything up online. Simply watch the lesson, download the PDF, study from it, and go straight to past papers. Everything you need is right here in one place.
Thepractical component is fully covered in this course. Students are taken through the investigation into collecting and analysing data about variation in a group of people - exploring both continuous and discontinuous variation through real data collection and interpretation. The experiment is broken down in full - covering the method, variables, how to present data correctly using appropriate graph types, data interpretation and evaluation - with specific training on how to answer practical questions inPapers 5 and 6 that test experimental skills, data analysis and scientific reasoning under exam conditions.
This course is ideal for students aiming for high achievement and A* grades in Biology examinations.
Who this course is for
IGCSE Biology Students Preparing for External Exams
Biology Igcse Course Unit 18
Published 6/2026
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Language: English | Duration: 1h 9m | Size: 1.56 GB
Variation and Selection
What you'll learn
In this course students will learn exactly what they need to know for their Biology IGCSE exams. Students will learn about
1. Describe variation as differences between individuals of the same species
2. State that continuous variation results in a range of phenotypes between two extremes; examples include body length and body mass
3. State that discontinuous variation results in a limited number of phenotypes with no intermediates
4. State that discontinuous variation is usually caused by genes only and continuous variation is caused by both genes and the environment
5. Investigate and describe examples of continuous and discontinuous variation
6. Describe mutation as genetic change[/center]
7. State that mutation is the way in which new alleles are formed
8. State that ionising radiation and some chemicals increase the rate of mutation
9. Describe gene mutation as a random change in the base sequence of DNA
10. State that mutation, meiosis, random mating and random fertilisation are sources of genetic variation in populations
11. Describe an adaptive feature as an inherited feature that helps an organism to survive and reproduce in its environment
12. Interpret images or other information about a species to describe its adaptive features
13. Explain the adaptive features of hydrophytes and xerophytes to their environments
14. Describe natural selection with reference to
(a) genetic variation within populations
(b) production of many offspring
© struggle for survival, including competition for resources
(d) a greater chance of reproduction by individuals that are better adapted to the environment than others
(e) these individuals pass on their alleles to the next generation
15. Describe selective breeding with reference to
(a) selection by humans of individuals with desirable features
(b) crossing these individuals to produce the next generation
© selection of offspring showing the desirable features
16. Outline how selective breeding by artificial selection is carried out over many generations
17. Describe adaptation as the process, resulting from natural selection, by which populations become more suited to their environment over many generations
18. Describe the development of strains of antibiotic resistant bacteria as an example of natural selection
19. Outline the differences between natural and artificial selection
Requirements
Access to a device to watch lessons - phone, tablet, or computer No textbook needed - everything is covered in the course
Description
This Biology course is structured specifically around the latest Cambridge IGCSE and GCE Biology syllabus, ensuring complete and accurate coverage of every objective students need to master for their examinations. Students preparing for AP Biology, IB Biology, or equivalent international curricula will also find this course highly valuable for building a thorough understanding of the theory component of their exams, as the core biological concepts covered are closely aligned across these specifications.
The course focuses onUnit 18: Variation and Selection, a unit that connects genetics, evolution and ecology in a way that examiners love to test across all papers. From continuous and discontinuous variation to mutation, natural selection, selective breeding and adaptive features - every syllabus objective is covered in full, with zero gaps.
Every syllabus objective is covered comprehensively, without overloading you with irrelevant material. The content is precise, focused, and directly aligned with what examiners expect - so you spend your time learning exactly what matters and nothing that does not. Throughout every lesson, real past paper questions are used to show you how this unit is examined, what a full-mark answer looks like, and the common mistakes that cost students marks every single year. You will know not just what to say, but how to say it - and equally importantly, what not to write.
The course builds strongexam technique alongside content knowledge, covering every question type across Papers 1, 2, 3 and 4 - from multiple choice and short answer to structured and extended response questions. Students leave this course knowing exactly how to approach any question on this unit regardless of how it is worded.
Every video lesson comes with adownloadable PDF resource that contains everything you need to know for that specific lesson - definitions, diagrams, key points and exam tips - all written and structured to match exactly what the syllabus requires. There is no need to open a textbook, search for revision guides, or look anything up online. Simply watch the lesson, download the PDF, study from it, and go straight to past papers. Everything you need is right here in one place.
Thepractical component is fully covered in this course. Students are taken through the investigation into collecting and analysing data about variation in a group of people - exploring both continuous and discontinuous variation through real data collection and interpretation. The experiment is broken down in full - covering the method, variables, how to present data correctly using appropriate graph types, data interpretation and evaluation - with specific training on how to answer practical questions inPapers 5 and 6 that test experimental skills, data analysis and scientific reasoning under exam conditions.
This course is ideal for students aiming for high achievement and A* grades in Biology examinations.
Who this course is for
IGCSE Biology Students Preparing for External Exams
Code:
https://rapidgator.net/file/34d14091912fe25b64d88b8c3fc023b9/Biology_IGCSE_Course_Unit_18.part2.rar.html
https://rapidgator.net/file/2520893a402babe196634ec46152a10e/Biology_IGCSE_Course_Unit_18.part1.rar.html
https://nitroflare.com/view/7A1E6123B60D970/Biology_IGCSE_Course_Unit_18.part2.rar
https://nitroflare.com/view/0F873A323C7EBE2/Biology_IGCSE_Course_Unit_18.part1.rar