3. Principles of Inheritance Flashcards Preview

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Flashcards in 3. Principles of Inheritance Deck (2):

Who is often regarded as the father of genetics? What did he do?

- Gregor Mendel
- crossed varieties of pea plants that had different characteristics and, from his results, he deduced the principles on which inheritance is based


Was Gregor Mendel the first to attempt to deduce the principles of inheritance? If not, why was he successful?

- no

- he obtained numerical rather than descriptive results
- and used large numbers of pea plants (it is important in science to have enough replicates to ensure reliability)

e.g. in 'seed=smooth/wrinkled' example, he counted 7,324 seeds in F2 generation:
- smooth: 5,474
- wrinkled: 1,850
with such large numbers, he could be very confident that the basic ration was 3:1

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