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14 Cards in this Set
- Front
- Back
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What are Genes:
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Blueprints that produce or influence traits. |
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What are gene locus: |
Location of a gene |
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What is a gene pair? |
Two genes at homologus loci. Two genes at the same location. (BB or Bb or bb) |
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What is an Allele? |
two genes at a single location that specify a character trait. Example: eye colour.
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If alleles are of the same form they are considered? |
Homozygous. ex BB or bb |
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If alleles are of different forms they are considered? |
Heterozygous. ex: Bb |
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What is a Dominate Allele? |
The allele that is expressed in the heterozygous condition (B in Bb). Represented by an upper case letter. |
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What is a Recessive Allele? |
The allele that is not expressed in the heterozygous condition (b in Bb). Represented by a lower case letter. |
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What is homozygous Dominant? |
2 dominant allels for a given trait (BB) |
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What is Homozygous Recessive? |
2 recessive alleles for a given trait (bb) |
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what is Heterozygous |
2 different forms of an allele for a given trait. (Bb). Heterozygote |
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What is a Genotype? |
the gene pair. (Bb, BB, or bb) |
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What is a Phentype? |
The observable trait produced by the genotype. |
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What is true breeding? |
Organism that (when selfed) produces offspring that are identical to parent. (Homozygous Dominant/recessive) |
