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Definition
| the different forms of a gene. Y and y are different alleles of the gene that determines seed color. |
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Definition
| a trait expressed preferentially over another trait. |
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Definition
| offspring of a cross between true breeding plants, homozygous for the trait of interest. |
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Term
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Definition
| offspring of a cross involving the F1 generation |
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Term
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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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Term
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Definition
| differing alleles for a trait in an individual, such as Yy. |
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Term
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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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Term
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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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Term
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Definition
| cross involving parents differing in only one trait. |
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Term
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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 appearence of an organism with respect to a trait. |
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Term
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Definition
| the opposite of dominant. A trait that is preferentially masked. |
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Term
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Definition
| a gene coded on a sex chromosome, such as the X-chromosome linked genes of flies and man. |
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