LS.10b-Heredity

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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 genotype?

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A genotype is the genetic makeup of an organism, represented by letters (e.g., BB, Bb, bb).

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What is a phenotype?

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A phenotype is the observable physical or behavioral 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., Bb).

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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 paired with a different allele.

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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 paired with another recessive allele.

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What is a purebred organism?

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A purebred organism has a homozygous genotype, meaning it has two identical alleles for a trait.

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What is a hybrid organism?

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A hybrid organism has a heterozygous genotype, meaning it has two different alleles for a trait.

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What are alleles?

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Alleles are different forms of a gene that can exist at a specific locus on a chromosome.