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17 Cards in this Set
- Front
- Back
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Heredity
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passing of physical characteristics from parent to offspring.
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Trait
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physical characteristics
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Genetics
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scientific study of Heredity.
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Fertilization
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a new organsism begins to form when egg and sperm join together.
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Purebred
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organism of many generations that have the same Trait.
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Gene
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factors that control a Trait; sequence of DNA that's expressed as a physical Trait.
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Dominant Alle
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a Trait that always shows up in the organism when the alle is present. (captital letter)
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Recessive Alle
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hidden whenever the Dominant Alle is present. (lower case letter)
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Hybrid
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2 different alles for a Trait.
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Alle
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one of the possible forms of a Gene.
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Probability
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a number that describes how likely it is that an event will occur.
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Punnet Square
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a chart that shows all the possible combinations of alles that can result from a genetic cross.
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Phenotype
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a physical appearance or visible traits.
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Genotype
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an organism's genetic makeup, or alle combination.
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Homozygous
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an organism that has two idenitical alles for a trait. EX: TT or tt
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Heterozygous
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an organism with two different alles for a trait. EX: Tt
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Codominance
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alles are neither dominant or recessive. As a result both alles are expressed in the offspring.
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