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9 Cards in this Set
- Front
- Back
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Trait or Phenotype: |
A physical charecteristic determined by our genes |
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Certain expressions of phenotypes can be |
Dominant over others |
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Traits are controled by |
1 gene -> Monogenic (Blood type) >2 genes -> polygenic (eye colour)
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Homologous Chromosomes |
Have the same genes, and so each gene is present in two copies |
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Varients of the same gene |
Are called Alleles, they determine the variation of the trait |
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A person with identical alleles for a given gene |
Homozygous |
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A person with different alleles for a given gene |
Heterozygous |
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An allele can be dominant |
The dominant allele will be expressed always |
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It can be recessive |
Only gets expressed with two copies of the allele in the homozygous |
