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4.1 Science Vocab.

TermDefinition
heredity the passing of physical characteristics from parents to offspring
trait each different form of a characteristic
genetics the scientific study of heredity
fertilization a new organism begins to form when egg and sperm join
purebred the offspring of many generations that have the same trait
gene the factors that control a trait
alleles the different forms of a gene
dominant allele one whose trait always shows up in the organism when the allele is present
recessive allele hidden whenever the dominant allele is present
hybrid organism that has two different alleles for a trait
Created by: S730503
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