Mendelian and NonMendelian Inheritance

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What is co-dominance?

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A type of inheritance pattern where both traits are fully expressed in the offspring, such as AB blood type in humans.

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What is probability in genetics?

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The likelihood or chance that a certain genetic event will occur, often expressed as a fraction or percentage.

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What is a phenotype?

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The observable physical or biochemical characteristics of an organism, such as red hair or blue eyes.

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What is incomplete dominance?

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A type of inheritance pattern where the phenotype of the heterozygote is a blend of the two parental traits, like pink flowers from red and white parents.

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What is a recessive allele?

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An allele whose trait only shows up when no dominant allele is present, represented by a lowercase letter (e.g., 'a').

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What is a dominant allele?

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An allele that expresses its trait even when only one copy is present, represented by an uppercase letter (e.g., 'A').

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What is a genotype?

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The genetic makeup of an organism, represented by the alleles it carries, such as AA, Aa, or aa.

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What is a Punnett square?

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A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

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What is the difference between homozygous and heterozygous?

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Homozygous means having two identical alleles for a trait (e.g., AA or aa), while heterozygous means having two different alleles (e.g., Aa).

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What is a locus?

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The specific location of a gene on a chromosome.