Genetics vocabulary

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What is a heterozygous genotype?

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A heterozygous genotype consists of two different alleles for a particular gene, such as Tt.

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What is a homozygous genotype?

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A homozygous genotype consists of two identical alleles for a particular gene, such as EE.

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What is an allele?

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An allele is a variant form of a gene. For example, the gene for eye color can have alleles for brown or blue.

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, such as black fur.

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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, such as Bb or TT.

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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 dominant allele?

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A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype.

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What is a recessive allele?

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A recessive allele is an allele that only expresses its trait when two copies are present in the genotype.

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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 is a trait?

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A trait is a specific characteristic of an organism, such as height, color, or shape.