# DNA: THE CODE OF LIFE notes

> CAPS-aligned study notes for DNA: THE CODE OF LIFE in Grade 12 Life Sciences. Browse the sections below for explanations, worked examples and exam preparation.

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## Sections in DNA: THE CODE OF LIFE

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- [Introduction](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/introduction) — DNA: The Code of Life Every living organism on Earth carries a remarkable molecule that stores and transmits the instructions for life. Deoxyribonucleic acid (DNA) is the blueprint for building and…
- [DNA: location, structure and functions](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/dna-location-structure-and-functions) — DNA: Location, Structure and Functions DNA is the most important molecule in biology. It carries the hereditary instructions that are passed from parent to offspring, and it contains the coded…
- [DNA replication](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/dna-replication) — DNA Replication Before a cell divides, it must first make an exact copy of all its DNA so that each daughter cell receives a complete set of genetic information. This copying process is called DNA…
- [DNA profiling](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/dna-profiling) — DNA Profiling Every person (except identical twins) has a unique DNA sequence. DNA profiling is a technique used to produce a visible pattern from a person's DNA that can be compared with other…
- [RNA: location, Structure and function](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/rna-location-structure-and-function) — RNA: Location, Structure and Function While DNA stores the genetic instructions, it cannot leave the nucleus to carry out those instructions directly. Instead, cells use a closely related molecule…
- [Protein synthesis](https://www.hlayiso.com/grade-12/life-sciences/notes/dna-the-code-of-life/protein-synthesis) — Protein Synthesis Protein synthesis is the process by which cells manufacture proteins according to the instructions in DNA. It involves two main stages: transcription (making mRNA from DNA in the…

## Other Life Sciences topics

- [MEIOSIS](https://www.hlayiso.com/grade-12/life-sciences/notes/meiosis)
- [REPRODUCTION IN VERTEBRATES](https://www.hlayiso.com/grade-12/life-sciences/notes/reproduction-in-vertebrates)
- [HUMAN REPRODUCTION](https://www.hlayiso.com/grade-12/life-sciences/notes/human-reproduction)
- [GENETICS AND INHERITANCE](https://www.hlayiso.com/grade-12/life-sciences/notes/genetics-and-inheritance)
- [RESPONDING TO THE ENVIRONMENT (Humans)](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-humans)
- [HUMAN ENDOCRINE SYSTEM AND HOMEOSTASIS IN HUMANS](https://www.hlayiso.com/grade-12/life-sciences/notes/human-endocrine-system-and-homeostasis-in-humans)
- [RESPONDING TO THE ENVIRONMENT (PLANTS)](https://www.hlayiso.com/grade-12/life-sciences/notes/responding-to-the-environment-plants)
- [EVOLUTION](https://www.hlayiso.com/grade-12/life-sciences/notes/evolution)

## Frequently asked questions

### What is covered in DNA: THE CODE OF LIFE for Grade 12 Life Sciences?

The DNA: THE CODE OF LIFE section covers all key concepts from the Grade 12 Life Sciences CAPS curriculum, including detailed explanations, worked examples, and exam preparation tips.

### Are the DNA: THE CODE OF LIFE notes free?

Yes. Each section has a free preview, and a free Hlayiso account lets you read the full notes.

### How do these notes help with exam preparation?

Our DNA: THE CODE OF LIFE notes are CAPS-aligned and include worked examples, common mistakes to avoid, and exam tips — everything you need to prepare for your Grade 12 Life Sciences exams.

### Are there quizzes for DNA: THE CODE OF LIFE?

Yes. Hlayiso has quizzes for DNA: THE CODE OF LIFE in Grade 12 Life Sciences. Test your understanding after reading the notes.

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