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9 Cards in this Set
- Front
- Back
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What is the genotype?
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The genetic constitution of an organism
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A change to the phenotype that does not affect the genotype is called a....
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...modification
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What is a gene?
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A section of DNA that usually determines a single characteristic of an organism. It does this by coding for particular polypeptides.
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What is the position of a gene on a chromosome known as?
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The locus
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What is an allele?
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One of the different forms of a gene.
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Be specific with terms
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Homozygous dominant, heterozygous, heterozygous recessive
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What is co-dominance?
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When both allele contribute to the phenotype
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Co-dominance can result in a....
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blend of both features (pink flowers) or expression of both (A and B antigens in AB blood type)
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What is the term when an organism has more than two allelic forms?
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Multiple alleles - however, there are always only two chromosomes in a homologous pair. Therefore, only two of the three or more multiple alleles in existence can be present in a single organism.
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