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 incomplete dominance, codominance, and polygenic inheritance.

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What is Codominance?

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Codominance is a type of inheritance where both alleles in a heterozygous individual contribute equally and visibly to the phenotype, such as AB blood type.

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What is Incomplete Dominance?

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Incomplete dominance is a form of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes, such as pink flowers from red and white parents.

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What is Polygenic Inheritance?

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Polygenic inheritance is a type of inheritance where multiple genes influence a trait, resulting in a continuous range of phenotypes, such as skin color.

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Define Homozygous.

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Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

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Define Heterozygous.

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Heterozygous refers to having two different alleles for a particular gene, such as Aa.

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What is a Phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

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What is a Genotype?

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A genotype is the genetic constitution of an individual, represented by the alleles they possess, such as AA, Aa, or aa.

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What is the result of a cross between a homozygous red flower (RR) and a homozygous white flower (WW) in incomplete dominance?

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100% of the offspring will have pink flowers (RW).

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What is the difference between Dominant and Recessive alleles?

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A dominant allele is expressed in the phenotype even when only one copy is present, while a recessive allele is only expressed when two copies are present.