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14 Cards in this Set
- Front
- Back
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Heredity
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The transmission of traits from one generation to the next
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A gene
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A piece of DNA that contains the directions of the trait you will have
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Phenotype
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Physical appearance of the organism; the trait that is shown.
(ex. tall, short) |
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Genotype
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The actual gene make-up of the organism (ex. Tt or tt)
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Probability
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The likelihood that a particular event will occur
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Incomplete dominance
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When neither gene is dominant so both are shown in a blend
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Purebred pea plant vs. Hybrid tall pea plant
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The purebred has two of the same genes (TT or tt) while the hybrid pea plant has two different genes (Tt)
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If a quarter is tossed heads 20 times, what is the probability that it will land on heads again?
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1/2 or 50% because the probability stays the same
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Mendel's law of dominance
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When an organism has two different genes for a trait, one will be expressed (dominant), while the other will be hidden (recessive) ex: TT * tt = Tt
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Mendel's law of segregation
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When a parent forms sex cells the parent's gene pairs seperate and one gene from each pair goes to each sex cell (ex. Tt * Tt could be tt)
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Mendel's law of independant assortment
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Each gene pair of a trait is inherited independantly from any other gene pair (ex. color is inherited seperately than height)
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First fillial Generation
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The offspring of the P generation
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P generation
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The parents of the first fillial generation
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Man who studied pea plants and their offspring to get information on heredity
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Gregor Mendel
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