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PROFESSOR: Welcome back to week three of 7.00x--
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Introduction to Biology, the Secret of Life.
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This week, we turn to genetics, which I really like because I'm a
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geneticist.
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We're going to start with Gregor Mendel and his experiments that showed
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the basis of inheritance.
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Then we're going to talk about the Chromosome theory of Inheritance and
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the correspondence and the conflict between those two.
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They don't get resolved until the experiments of Thomas Hunt Morgan,
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early in the 20th century, working with fruit flies, when his lab
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discoveries this phenomenon called recombination.
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And they stumble into the idea that you can build maps showing the
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locations of genes without even knowing what genes are about.
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It's really pretty remarkable.
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We've got all sorts of deep dives for you.
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Deep dives--
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Michelle is going to explain to you how meiosis works and how to trace
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linked and unlinked genes through meiosis.
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We've also got a deep dive for you on how to trace inheritance in fruit fly
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crosses and tell whether traits are recessive or dominant.
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It's the beginning of genetics--
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an incredibly important part of course and the thing I really love.
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Glad to have you back.
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