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17 Cards in this Set
- Front
- Back
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Epitasis
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The interaction of genes that effects the phenotype of another.
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Penetrance
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The all or none expressiveness of a gene.
Polydactlyly |
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Pleiotropic
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Gene that contains several functions. More than one effect
EA: Porhyria Variegata |
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Genetic Heterogeneity
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Different genes produce the same phenotype
Ea: Hearing lose |
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Phenocopy
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An environmentally caused trait that appears to be inherited.
EA: AIDS |
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Lethal Alleles
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A phenotype class does not survive to reproduce.
Ea: Spontaneous Abortion |
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Multiple Allelles
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Many Variants or degrees of a phenotype occur.
Cystic Fibrosis. |
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Incomplete Dominance
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A heterozygotes phenotype is intermediate between two homo zygotes.
Ea: Familial Hypercholesterolema |
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Codominance
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A heterozygotes pheno is destinct from and not intermediate between those of two homozygotes.
EA: ABO |
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HeteroPlasmy
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Mutation in some mitochondria and not in others.
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Linkage
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Refers to the transmission of genes on the same chromosome.
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Recombinant
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Mixing of maternal and parental genes on a single chromosome
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Linkage Maps
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Diagrams that show the order of genes on a chromosome
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Linkage Disequilibrium:
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Nonrandom, association between DNA sequences
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Pseudoautosomal Regions
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Have gene counteaprts on the Y chromosome that allow for crossing over with the X chromosome
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Transcription Factor:
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Controls the expression of other genes
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Hemizygous
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One X linked trait in a male.
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