Paper I · 2 General Science & Technology · 2.3 Living world, cell and genetics

2.3.5 DNA, chromosomes, sex determination and genetic disorders

DNA is a double helix that carries the code for proteins through RNA, and changes in genes or in chromosome number cause inherited disorders such as haemophilia, sickle-cell anaemia and Down syndrome.

  • APPSC Paper I · Paper I
  • Standard level
  • 6 min read
  • Full course

Key terms

  • DNA
  • double helix
  • Watson Crick
  • central dogma
  • genetic code
  • sex determination
  • Down syndrome
  • haemophilia
  • sickle cell
  • Human Genome Project

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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