Complex Inheritance Patterns

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What is Multiple Alleles?

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A situation where a gene has more than two alleles, leading to various possible phenotypes, such as fur color in cats.

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What is Codominance?

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A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive, like purple and yellow flowers.

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What is Incomplete Dominance?

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A form of inheritance where the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes, such as red and white flowers producing pink flowers.

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How does Incomplete Dominance differ from Mendelian inheritance?

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In incomplete dominance, the heterozygous genotype results in a unique phenotype, unlike Mendelian inheritance where one allele is completely dominant.

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What are Polygenic Traits?

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Traits that are controlled by multiple genes, leading to a range of phenotypes, such as human skin color.

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What is Epistasis?

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A genetic interaction where one gene masks or suppresses the expression of another gene, affecting the phenotype.

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What is the significance of the Punnett Square?

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A tool used to predict the genotypes and phenotypes of offspring from a genetic cross.

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What are the human blood types and their inheritance pattern?

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Human blood types (A, B, AB, O) are determined by codominance and multiple alleles.

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What is a Heterozygous genotype?

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A genotype consisting of two different alleles for a particular gene, such as X^B X^b.

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What is a Homozygous genotype?

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A genotype consisting of two identical alleles for a particular gene, such as X^b X^b.