Heredity and Punnett Squares

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What is heredity?

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Heredity is the passing of traits from parents to offspring through genes.

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What is a Punnett Square?

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A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

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What does dominant mean in genetics?

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Dominant refers to an allele that expresses its trait even when only one copy is present in the genotype.

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What does recessive mean in genetics?

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Recessive refers to an allele that only expresses its trait when two copies are present in the genotype.

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What is the genotype of a purebred dominant organism?

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The genotype of a purebred dominant organism is represented as 'TT'.

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What is the genotype of a purebred recessive organism?

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The genotype of a purebred recessive organism is represented as 'tt'.

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a trait, such as 'Tt'.

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What does homozygous mean?

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Homozygous refers to having two identical alleles for a trait, such as 'TT' or 'tt'.

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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 its genotype.

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What is a genotype?

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A genotype is the genetic makeup of an organism, represented by the alleles it possesses.