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An organism with different alleles for one trait


Offspring of multiple generations that have the same trait


An organism with identical alleles for one trait


Different forms of the same gene


Every different form of a characteristic

recessive allele

One whose trait is always hidden when the dominant allele is present


The physical appearance of an organism


The process by which a new organism is created by joining of a sperm and an egg


The science of studying heredity


The passing of physical characteristics from parents to offspring


The genetic letter code of an organism

dominant allele

One whose trait always shows up in the organism when the allele is present


The factor that controls a trait


An organism that has two different alleles for the same trait

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