Inheritance & Genetic Variation Review

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What is a dominant allele?

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A dominant allele is a version of a gene that will express its trait even if only one copy is present in an individual.

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What is a recessive allele?

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A recessive allele is a version of a gene that only expresses its trait if two copies are present in an individual.

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What are chromosomes?

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Chromosomes are long, tightly-wound strands of DNA that contain genes.

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What are genes?

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Genes are segments of DNA that determine specific traits in an organism.

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What are alleles?

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Alleles are different versions of a gene that can exist for a particular trait.

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What is a Punnett Square?

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A Punnett Square is a diagram used in genetics to predict the genotype and phenotype ratios of potential offspring.

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How do humans inherit traits?

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Humans inherit traits from their parents through the genes they pass down.

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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, consisting of the alleles it possesses.

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What is genetic variation?

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Genetic variation refers to the differences in DNA sequences among individuals, which can lead to different traits.

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