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| The different forms of a gene. Y and y are different alleles of the gene that determines 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 involving the F1 generation. |
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Definition
| 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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Definition
| 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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Definition
| Heterozygous; usually referring to the offspring of two true-breeding(homozygous) individuals differing in the traits of interest. |
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Definition
| Cross involving parents differing in only one trait. |
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Definition
| Change in the DNA sequence of a gene to some new, heritable form. Generally, but now always a recessive allele. |
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Definition
| The physical appearance of an organism with respect to trait. |
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Definition
| The opposite of dominant. A trait that is prefentially masked. |
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Definition
| A gene coded on a sex chromosome, such as the X-chromosome linked genes of fly and man. |
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