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15 Cards in this Set
- Front
- Back
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*** determines how many units of function (genes) define a given set of mutations that express the same phenotype.
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Complementation
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If we have no wild type phenotypes, then the genes are different mutant alleles for the same gene and are in the same *** group. They "are/are not" complementary of each other.
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complementation
are not |
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Population of individuals can have *** alleles. An individual can only have *** alleles.
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multiple
two |
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n=number of alleles
kinds of genotypes = *** kinds of heterozygotes = *** kinds of homozygotes = *** |
n(n+1)/2
n(n-1)/2 n |
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antigen = ***
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antibody generating substance
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The cis-trans test is also known as the....
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complementation test
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***: Where the allele is not completely dominant over another allele.
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Incomplete Dominance
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***: The heterozygote exhibits the phenotypes of both homozygotes.
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Codominance
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***: Where non-alleles interact and one masks the expression of the other.
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Epistasis
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Name two examples of recessive lethal alleles in humans.
*** disease (enzyme deficiency that prevents proper nerve function). Symptoms about one year after birth. Die by 3 to 4 years. *** disease (involuntary movements and progressive central nervous system degeneration). Expressed in 30s. |
Tay-Sachs
Huntington’s |
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*** = The frequency with which a dominant or homozygous recessive gene expresses itself in a population.
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Penetrance
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The gene that causes neurofibromatosis demonstrates an example of ***.
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penetrance
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*** = The degree to which a penetrant gene or genotype is phenotypically expressed.
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Expressivity
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***: the phenomenon in which a offspring's phenotype is determined not by the its genotype but its mothers, w/no influence by the paternal genotype.
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Maternal Effect
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An individual resulting from this influence is called a ***, because they look like the mutant.
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phenocopy
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