Understanding 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 codominance, incomplete dominance, and epistasis.

Front

What is Codominance?

Back

Codominance is a genetic scenario 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?

Back

Incomplete Dominance is a genetic situation where one allele does not completely dominate another, resulting in a third phenotype that is a blend of the two.

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What is Epistasis?

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Epistasis is a genetic interaction where the expression of one gene is suppressed or masked by another gene.

Front

What does it mean if a llama has the genotype cc?

Back

If a llama has the genotype cc for an epistatic gene, it will be albino.

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Why do we use different letters in genetic notation for codominance?

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Different letters are used in genetic notation for codominance to show that both alleles are expressed equally.

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How are alleles expressed in codominance?

Back

In codominance, both alleles are expressed equally.

Front

Give an example of incomplete dominance in flowers.

Back

A red flower crossed with a white flower produces pink flowers.

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What is the significance of epistasis in genetics?

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Epistasis is significant because it shows how one gene can influence the expression of another gene.

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What is the difference between dominant and recessive alleles?

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Dominant alleles mask the effect of recessive alleles in a heterozygote.