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Father of genetics. Studied traits in pea plants.

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Gregor Mendel

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Any characteristic that can be passed be inherited from

parent to offspring.

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Trait

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Alternative forms of a trait.

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Alleles

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Section of chromosome (DNA) that codes for a specific trait.

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Gene

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A diagram of the genetic history of an individual: can

show how a trait is inherited over several generations of a family. (a genetic family tree)

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Pedigree

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Genotype of an individual with two different alleles for a given

trait.

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Heterozygous

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Genotype of an individual with two of the same alleles for a

given trait.

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Homozygous

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Alleles for a trait seperate randomly and independently of

each other.

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Law of Independent Assortment

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Each pair of alleles segregates (seperates)during gamete formation. Each gamete

contains one allele from each pair.

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The Law of Segregation

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Occurs when neither allele is dominant. They both have an

affect on the heterozygous individual which shows a

phenotype between the two homozygous phenotypes.

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Incomplete Dominance

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The genetic make-up of an organism.

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Genotype

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The external appearance of an individual determined by it’s

genotype.

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Phenotype