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Flashcards · Biology · Inheritance

Mendel and the Development of Genetics

16 cards

  1. Who was Mendel?

    An Austrian monk who studied inheritance using pea plants.

  2. Why did Mendel use pea plants?

    They grow fast, show clear differences and can be cross-pollinated by hand.

  3. What was blending inheritance?

    The idea that the features of parents mix together.

  4. What was the F1 generation of tall and dwarf peas?

    All tall.

  5. What was the F2 generation ratio?

    About 3 tall to 1 dwarf.

  6. What did the F1 result show?

    Features do not blend.

  7. What did Mendel call what we now call genes?

    Inherited factors.

  8. How many factors did he say a plant has for a feature?

    Two, one from each parent.

  9. Which factor is hidden in the F1 plants?

    The recessive factor.

  10. Why was Mendel's work ignored?

    It did not fit blending inheritance, and no mechanism was known.

  11. When was Mendel's work rediscovered?

    In 1900.

  12. Who suggested that factors were on chromosomes?

    Sutton and Boveri, in 1902.

  13. What did Watson and Crick describe in 1953?

    The structure of DNA.

  14. Why was his use of mathematics unusual?

    Few biologists used statistics at that time.

  15. Why did Darwin not know of Mendel's work?

    He never read it.

  16. Common mistake about Mendel?

    Saying that he knew about genes and DNA. He did not.