Non-Mendelian Genetics

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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 codominance, incomplete dominance, and multiple alleles.

Front

What are codominant traits?

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Codominant traits are traits where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What are incompletely dominant traits?

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Incompletely dominant traits are traits where the phenotype of heterozygotes is intermediate between the phenotypes of the two homozygotes.

Front

How many alleles are involved in codominant and incompletely dominant traits?

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Two alleles are involved.

Front

What genotype leads to a blended phenotype in snapdragons?

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The heterozygous genotype (Rr) leads to a blended phenotype.

Front

What is an example of codominance in cattle?

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In certain breeds of cattle, both red and white hairs show up together, demonstrating codominance.

Front

What cross results in 100% pink flowers in snapdragons?

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The cross RR (red) x rr (white) results in 100% pink flowers.

Front

What cross results in 50% black and white feathers in chickens?

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The cross BW (black and white) x BW (black and white) results in 50% black and white feathers.

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What is the phenotype of a homozygous dominant individual?

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A homozygous dominant individual will express the dominant phenotype.

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What is the phenotype of a homozygous recessive individual?

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A homozygous recessive individual will express the recessive phenotype.