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15 Cards in this Set
- Front
- Back
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mutli-alleles?
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yes mutlialleles but a person can only have two at a time (diploid anyways)
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example of mutli in blood
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three alleles IA, IB, i
four pheno types A, B, O, AB |
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explain blood type
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A - IA,i...Ia,Ia...make antigen A but not antibodies
B- Ib,i...Ib,Ib, make antigen B but not antibodies O, i,i universial donor, antibodies for both no antigens AB, Ia/Ib - universal acceptor |
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explain eye color
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lots of types
esion is recessive to red dominate to white |
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types of dominace
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complete
incomplete codominance |
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imcomplete dominance
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one allele is not completely dominate
phenotype is intermediate |
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codominance
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co-partners both gets expressed
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haplosufficient
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half of gene product is good enough
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incomplete dominance
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1 dose of gene product in heterzygote
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codominance
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both alleles expressing
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complete dominance
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halposufficient
or dominate allele is up regulated |
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two types of gene ineractions
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epistasis
or mutli genes control trait, make new phenotype |
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epistasis
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one or more genes mask expression of genes, altering phenotype
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chicken example
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two dominate alleles R and P,
their interaction makes new phenotype, walnut shaped |
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recessie epistasis
dominant epistasis duplicated recessive epsitasis |
caused by recessive alleles, aa makes B
A masks effect of B A and B needed to produce phenotype |
