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Flashcards · Biology · Inheritance

Mendel and the Discovery of Inheritance

16 cards

  1. Who discovered the basic rules of inheritance?

    Gregor Mendel.

  2. What organism did Mendel use?

    Pea plants.

  3. Give two reasons why peas were a good choice.

    They grow quickly and cheaply, have clear differences, and can be cross-pollinated by hand.

  4. What is a pure-breeding plant?

    One that always produces offspring like itself when self-pollinated.

  5. What was the F1 generation in the tall and dwarf cross?

    All tall.

  6. What was the F2 ratio of tall to dwarf plants?

    About 3 : 1.

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

    Hereditary factors.

  8. How many factors did Mendel suggest each plant has for a characteristic?

    Two, one from each parent.

  9. Did the features blend in Mendel's results?

    No. The recessive feature came back unchanged.

  10. What was blending inheritance?

    The idea that the features of the parents mix in their offspring.

  11. Why was Mendel's work ignored?

    It went against the idea of blending, no mechanism was known, and he was not well known.

  12. When was Mendel's work rediscovered?

    In 1900.

  13. Who linked Mendel's factors to chromosomes in 1902?

    Sutton and Boveri.

  14. What did Watson and Crick show in 1953?

    The structure of DNA.

  15. Mendel counted 787 tall and 277 dwarf plants in the F2. About what ratio is this?

    About 3 : 1.

  16. Common mistake about Mendel?

    Saying he knew about genes and DNA. He did not know about either.