Non-Mendelian Genetics - 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 codominance, incomplete dominance, and multiple alleles.

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NGSS.HS-LS3-2

Front

What is codominance?

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Codominance is a form of inheritance where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

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What is incomplete dominance?

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Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two.

Tags

NGSS.HS-LS3-2

Front

What is an example of codominance?

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An example of codominance is the crossing of red (RR) and white (WW) flowers, resulting in offspring with red and white stripes or spots.

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What is an example of incomplete dominance?

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An example of incomplete dominance is the crossing of red (RR) and white (WW) flowers resulting in pink (RW) flowers.

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What is polygenic inheritance?

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Polygenic inheritance is a type of inheritance where multiple genes influence a single trait, leading to a continuous range of phenotypes.

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What are multiple alleles?

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Multiple alleles refer to the presence of more than two alleles for a genetic trait within a population.

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What is the phenotype of a child from a man with blood type AB and a woman with blood type O?

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The child will have blood type A or B, but not AB or O, as the mother can only contribute an O allele.

Tags

NGSS.HS-LS3-1

Front

What is the phenotype of a roan cow?

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A roan cow has a mix of red and white hair, resulting from codominance between the red (RR) and white (WW) alleles.

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What is the result of crossing a black chicken with a white chicken in terms of inheritance?

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The result is a 'barred' chicken, demonstrating codominance.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2