Non-Mendelian Genetics Flashcard Review

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What is Non-Mendelian Genetics?

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Non-Mendelian genetics refers to patterns of inheritance that do not follow Mendel's laws of inheritance, including incomplete dominance, codominance, and multiple alleles.

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What is complete dominance?

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Complete dominance occurs when one allele completely masks the effect of another allele in a heterozygote.

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What is codominance?

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Codominance is a form of inheritance where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

What is incomplete dominance?

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Incomplete dominance is a type of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

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What is an example of a trait that exhibits codominance?

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An example of codominance is the ABO blood group system, where both A and B alleles are expressed in individuals with AB blood type.

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What is a recessive X-linked disorder?

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A recessive X-linked disorder is a genetic condition that is carried on the X chromosome and manifests in males who have only one X chromosome.

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What genotype represents a male with hemophilia?

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X^hY represents a male with hemophilia, where X^h is the X chromosome carrying the hemophilia allele.

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What is the phenotype of a person with the genotype I^B i?

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The phenotype of a person with the genotype I^B i is type B blood.

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What does it mean when traits are blended?

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Blended traits refer to the concept of incomplete dominance, where the phenotype is a mix of the two parental traits.

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What is the significance of the star belly sneeches in genetics?

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The star belly sneeches illustrate the concept of complete dominance, where the presence of a dominant trait can mask a recessive trait.