Non-Mendelian Genetics

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What is Non-Mendelian Genetics?

Back

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

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What is a pedigree chart?

Back

A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors.

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What does a filled circle represent in a pedigree chart?

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A filled circle represents an affected female.

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What does a filled square represent in a pedigree chart?

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A filled square represents an affected male.

Front

What is incomplete dominance?

Back

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 co-dominance?

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

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What is a dominant trait?

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A dominant trait is one that is expressed in the phenotype even when only one copy of the allele is present.

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What is a recessive trait?

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A recessive trait is one that is expressed in the phenotype only when two copies of the allele are present.

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How many generations are typically shown in a pedigree chart?

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A pedigree chart can show multiple generations, often 3 to 4 generations.

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What is the significance of shaded individuals in a pedigree chart?

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Shaded individuals in a pedigree chart typically represent individuals that express the trait being studied.