Mendel and Heredity

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Aa is

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heterozygous (hybrid)

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The passing of physical characteristics from parent to young is called...

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Heredity

Front

What allele will always show up when present in the genetic combination?

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Dominant

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Another word for homozygous is...

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purebred

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When is a recessive allele expressed in offspring?

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when two copies are present

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What is the definition of a trait?

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

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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.

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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 does heterozygous mean?

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Heterozygous means having two different alleles for a particular gene.

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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.