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| The different forms of a gene. Y and y are different alleles of the gene that determins seed color |
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| A trait expressed preferentially over another trait |
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| Offspring of a cross between true breeding plants, homozygous for the trait of interest |
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| Offspring of a cross involving the F1 generation |
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| The genetic constitution of an organism with respect to a trait. Yellow seeds are dominant, but yellow seeded plants could have a genotype of either YY or Yy |
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Definition
| Differing alleles for a trait in an individual, such as Yy |
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| Both alleles for a trait are the same in an individual. They can be homozygous dominant (YY), or homozygous recessive (yy) |
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| heteroxygous; usually reffering to the offspring of two true-breeding (homozygous) individuals differing in the traits of interest |
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| cross involving parents differing in only one trait |
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| Change in the DNA sequence of a gene to some new, hetitable form. Generally, but now always a recessive allele |
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| The physical apperance of an organism with respect to a trait |
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Definition
| The opposite of dominant. A trait that is prefentially masked. |
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| A gene coded on a sex chromosome, such as the X-chromosome linked genes of flies and man |
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