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Genetics
vocabulary for Chapter 5
12
Science
7th Grade
11/09/2009

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Term
Gregor Mendel
Definition
Father of Genetics
Term
Heredity
Definition
the passing of traits from parent to offspring
Term
Dominant trait
Definition
The trait that covers over the other trait
Term
Recessive Trait
Definition
the trait that seems to disappear or hide
Term
Genotype
Definition
the entire genetic make up of an organism - Pp (letters)
Term
Phenotype
Definition
an organism's physical appearance (purple flowers)
Term
Homozygous
Definition
two of the same alleles, either dominant or recessive (PP or pp)
Term
Heterozygous
Definition
two different alleles for the same trait (Pp)
Term
Characteristic
Definition
a feature that has different forms in a population (eye color, hair color)
Term
trait
Definition
different forms of a characteristic (blue eyes)
Term
Sex cells
Definition
sperm and egg, also called gametes
Term
Punnett Square
Definition
a tool for predicting possible outcomes of a cross
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