Punnett Squares and Heredity

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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 from the parents.

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What does 'dominant' mean in genetics?

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A dominant allele is one that expresses its trait even when paired with a recessive allele.

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What does 'recessive' mean in genetics?

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A recessive allele is one that only expresses its trait when paired with another recessive allele.

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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.

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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 does 'homozygous' mean?

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Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

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What does 'heterozygous' mean?

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Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

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What is an allele?

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An allele is a variant form of a gene that can produce different traits.

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What does 'TT' represent in genetics?

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TT represents a homozygous dominant genotype for a trait.

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What does 'Tt' represent in genetics?

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Tt represents a heterozygous genotype for a trait.