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10 Cards in this Set
- Front
- Back
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Define a Gene |
Sequence of DNA based at specific locus on a chromosome that codes for a polypeptide |
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Define an allele |
An alternative form of a gene found at the same locus but may produce a different phenotype |
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Define Genome |
The complete set of genes in a cell |
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Define Genotype |
The genetic constitution of organism based on the alleles the organism posseses |
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Define Phenotype |
The observable characteristics of an organism as a product of interactions between the genotype and environment |
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How does genotypes dictate phenotype? |
Genes code for polypeptides Polypeptides control phenotypes in their roles as enzymes, hormones etc |
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Define Homozygous |
An organism that has the same alleles for a particular gene on each homologous chromosome |
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Define Heterozygous |
An organism that has two different alleles for the same gene |
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What is a dominant allele? |
An allele that masks the expression of another |
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What is a recessive allele? |
An allele that has it's expression masked by another |
