DNA and Genetics are among the most fascinating topics in Grade 12 Life Sciences.

These concepts help explain why living organisms inherit characteristics from their parents.

What Is DNA?

DNA stands for Deoxyribonucleic Acid.

It contains the genetic instructions that determine characteristics such as:

  • eye colour,
  • hair colour,
  • height,
  • and many other traits.

Why Genetics Is Important

Genetics helps scientists:

  • study inheritance,
  • understand diseases,
  • develop medical treatments,
  • and improve agriculture.

Examination Tips

Learners should:

  • understand genetic terminology,
  • practise Punnett squares,
  • revise inheritance patterns,
  • and complete past paper questions.

Final Thoughts

DNA and Genetics help explain how life is passed from one generation to the next.

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