Free About 1 hr0 learners Rev. 2026-10-28 0

Charles Darwin built a theory of all life on inherited differences without knowing how inheritance worked, while a friar in Brno was counting peas that held the answer. Within a century scientists had found the molecule that carries traits and read its code letter by letter. They could explain why two healthy parents can have a child with a disease neither of them shows, and why a Dutch man today stands far taller than his great-great-grandfather with much the same genes.

Genetics is also one of the easiest sciences to misread. Headlines announce a gene "for" intelligence or a percentage that seems to settle a child's fate, and old ideas about superior bloodlines keep resurfacing in new language. Working through the evidence makes such claims checkable. A family history becomes a set of odds you can calculate, a heritability figure shrinks to what it can actually tell you, an ancestry report earns the right amount of doubt, and the genetic record turns out to describe humanity as one closely related family.

Levels

  1. 1 1. The Puzzle of Inheritance 5-question quiz
  2. 2 2. Genes on Chromosomes 5-question quiz
  3. 3 3. What Genes Are Made Of 5-question quiz
  4. 4 4. From Gene to Protein 5-question quiz
  5. 5 5. Mutation and Inherited Disease 5-question quiz
  6. 6 6. Many Genes, Many Influences 5-question quiz
  7. 7 7. Reading the Genome 5-question quiz
  8. 8 8. Genes in Populations 5-question quiz

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