What this topic covers
Topic 3: Genetics has 5 subtopics:
- Reproduction
- Cell division
- Variation and evolution
- The development of understanding of genetics and evolution
- Additional inheritance patterns
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GCSE Edexcel Foundation Biology · Topic 3 of 9
Topic 3: Genetics – GCSE Edexcel Foundation Biology revision notes
Choose a subtopic. Reproduction, DNA, inheritance, variation and genetics. 24 lessons in 5 subtopics.
Revise Topic 3: Genetics for GCSE Edexcel Foundation Biology, including Reproduction and Cell division. 24 lessons across 5 subtopics.
24
Lessons
5
Subtopics
Topic 3: Genetics lessons by subtopic
24 lessons, grouped by subtopic.
Reproduction
- Gametes in Sexual Reproduction
- Sexual vs Asexual Reproduction and Cell Division
- What is Meiosis?
- Fertilisation and Development
- Sexual vs Asexual Reproduction: Types and Advantages
- Reproduction Strategies in Nature
- DNA Structure and the Genome
- Applications of Genome Research
- The Structure of DNA
- From DNA Code to Protein Synthesis
- Genetic Variation and Mutations
- Genetic vocabulary and basic inheritance (Part 1/2)
- Genetic vocabulary and basic inheritance (Part 2/2)
- Genetic crosses and Punnett squares
- Multiple gene inheritance
- Understanding Inherited Disorders
- Ethical Issues in Embryo Screening
- Sex Chromosomes and Genetic Crosses
Cell division
Variation and evolution
The development of understanding of genetics and evolution
Additional inheritance patterns
More in this course
Go back to the full GCSE Edexcel Foundation Biology topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is Topic 3: Genetics?
Reproduction, DNA, inheritance, variation and genetics. 24 lessons in 5 subtopics.
What does DNA stand for?
DNA stands for deoxyribonucleic acid. The The Structure of DNA notes cover this in full.
How many chromosomes do humans have?
Human body cells have 46 chromosomes arranged in 23 pairs. The Chromosomes, DNA and Genes notes cover this in full.
What is a gene?
A gene is a specific section of a DNA molecule that codes for a particular characteristic. The Chromosomes, DNA and Genes notes cover this in full.
What is an allele?
An allele is a different version of the same gene that controls the same characteristic but may produce different traits. The Genetic vocabulary and basic inheritance (Part 1/2) notes cover this in full.
What are gametes?
Gametes are specialised reproductive cells that contain half the normal number of chromosomes (haploid). The Gametes in Sexual Reproduction notes cover this in full.
What is a genome?
A genome is the entire genetic material of an organism. The DNA Structure and the Genome notes cover this in full.
What is a gamete?
A gamete is a reproductive cell, a sperm or egg, that contains half the normal number of chromosomes. The Genetic vocabulary and basic inheritance (Part 1/2) notes cover this in full.
What is meiosis?
Meiosis is a type of cell division that occurs in reproductive organs to produce gametes. The What is Meiosis? notes cover this in full.