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11 Cards in this Set

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gene
A unit of DNA that codes for a specific trait.
phenotype
The way that an organism looks, or the trait that is displayed.
(example: tallness or shortness)
heterozygous (or hybrid)
Organisms that have different alleles for a trait.
(example: Tt)
heredity
The set of characteristics that an organism recieves from its parents.
homozygous (or purebred)
Organisms that have identical alleles for a trait.
(example: TT or tt)
genetics
The study of heredity.
genotype
An organism's genetic makeup.
(example: TT, Tt, or tt)
trait
A physical characteristic.
(example: tallness or shortness)
alleles
Different forms of the same gene.
(example: the gene for height in pea plants has two forms, T and t)
Examples of Phenotypes
tall
short
brown hair
blue eyes
orange fur
Examples of Genotypes
TT, homozygous (purebred)
tt, homozygous (purebred)
Tt, heterozygous (hybrid)