hbio pedigrees & punnet squares
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10 Terms
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autosomal dominant
* does not skip a generation
* unaffected parents always have unaffected children
* affected children have at least 1 affected parent
* unaffected parents always have unaffected children
* affected children have at least 1 affected parent
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autosomal recessive
* can skip a generation
* unaffected parents have an affected child
* 1 affected parent can have an unaffected child
* unaffected parents have an affected child
* 1 affected parent can have an unaffected child
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sex-linked
* skips a generation
* mostly males affected
* affected fathers do not pass to their sons
* mostly males affected
* affected fathers do not pass to their sons
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complete dominance
when the dominant allele completely masks the effect of the recessive allele in heterozygous conditions
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incomplete dominance
when both alleles of a gene are partially expressed, creating a blend in heterozygous conditions
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co-dominance
when both alleles of a gene are equally expressed in heterozygous conditions
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genotype
the two alleles a person has inherited for a particular gene
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phenotype
the detectable physical expression of a genotype
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homozygous
genotypes made of the same alleles
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heterozygous
genotypes made of two different alleles