1.3 Genes and Chromosomes

Genes and Proteins

DNA, Genes and Chromosomes Illustrated

Study the diagram to make a connection between the terms 'DNA,' 'genes,' and 'chromosome.'

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It is important to understand how these terms relate to each other.

If you were able to unwind a tightly coiled chromosome, you would discover that a chromosome is really just a very, very long strand of DNA.

  • Genes are sections of DNA that code for a specific trait, such as eye color.
  • Chromosomes are made up of many genes, and almost every human body cell nucleus contains 46 chromosomes.