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||Codominant || •Two different versions (alleles) of a gene are expressed.

||Codominant || •Two different versions (alleles) of a gene are expressed.

•Both alleles influence the genetic trait or determine the characteristics of the genetic condition. || ABO blood group, alpha-1 antitrypsin deficiency

•Both alleles influence the genetic trait or determine the characteristics of the genetic condition.

|| ABO blood group, alpha-1 antitrypsin deficiency

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|Mitochondrial ||•Also known as maternal inheritance,  

|Mitochondrial ||•Also known as maternal inheritance,  

•Applies to the genes in mitochondrial DNA

•Applies to the genes in mitochondrial DNA

•As only egg cells contribute mitochondria to the developing embryo, only females can pass on mitochondrial mutations to their children. ||Leber hereditary optic neuropathy (LHON)

•As only egg cells contribute mitochondria to the developing embryo, only females can pass on mitochondrial mutations to their children.

||Leber hereditary optic neuropathy (LHON)

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