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17 Cards in this Set
- Front
- Back
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Law of independent assortment only work if the gene
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is found far apart.
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Crossing over does not create
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new genes or delete old ones.
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Greater map unit =
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great chance of crossing over or separated.
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Map Unit is
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distance on chromosomes.
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Germ cell mutation doesn't affect
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the organism but is passed on to offspring.
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Somatic cell mutation would affect
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organism not offspring.
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Mutations are
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not always negative.
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Positive mutations
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increase reproduction success, increases fitness.
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Negative mutations
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decrease reproduction success, decrease fitness.
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Deletion
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whole hunch of chromosome is lost.
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Inversion
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Piece of chromosome comes off flips and goes back in. Reverse order.
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Translocation
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One side broke off and other side does not.
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Nondisjunction
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Meiosis messes up either the homologous chromosome doesn't separate or sisters does not separate.
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Gene mutation
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Segments of DNA messing with the order of nucleotide
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Point mutation
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Messing with one nucleotide in the stand. Take it out, put in another, substitute it.
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Frame shift mutation
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Include addition, deletion
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Sickle cell anemia
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Substitutes adenine for thymine for single DNA codon.
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