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10 Cards in this Set
- Front
- Back
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Genetics
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the study of heredity
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Heredity
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the passing of charactersitics from parents offspring
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Traits
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are specific inherited characteristics that vary from one indivial to another
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Gene
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a section of DNA on a chromosome that codes for a trait
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Allele
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a distinct form of a gene:usually two per trait(one from each parent)
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Dominant Allele
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a gene that is fully expressed even when two differet alleles are present
EX:GG or Gg both show a green pea |
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Recessive Allele
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a gene that is expressed only when paired with another recessive allele;when paired with a dominant allele,the recessive trait is not expressed
EX:gg will show a yellow pea |
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Purebred
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an organism that received the same form of a genetic trait from each parent
EX:green pea plant X green pea plant (GG X GG gives GG offspring) |
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Hybrid
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an organism that recieved different forms of a genetic trait from each parent
EX:green pea plant X yellow pea plant (GG X gg gives Gg offspring) |
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Punnett Square
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used to predict and compare the genetics variations that will result from a cross
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