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Heredity means

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traits are passed down to offsprings.

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DNA is the basic building block of

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all living organisms.

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A trait is dominant if

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the person has one copy of the gene.

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Heterozygous means

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having two different alleles of the same gene.

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Organisms refer to

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All living things including humans, animals, plants, bacteria and viruses.

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What is a gene?

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A gene is a segment of DNA that contains the instructions for building a specific protein.

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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 homozygous mean?

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Homozygous means having two identical alleles for a particular gene.

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism.

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What is a genotype?

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A genotype is the genetic constitution of an individual, represented by the alleles.