Genetics: Intro
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Last updated 2:00 AM on 1/6/26
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13 Terms
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homozygous
having two identical alleles for a trait
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heterozygous
having two different alleles for a trait
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pure
having two like alleles; synonym of homozygous
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hybrid
having two different alleles; synonym of heterozygous
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dominant
appears in an organism's phenotype if the allele is present
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recessive
trait that will only appear in the phenotype if organism inherits two alleles; covered up by the dominant gene
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alleles
different forms of a gene
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trait
a characteristic that an organism can pass on to its offspring through its genes.
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gene
A segment of DNA on a chromosome that codes for a specific trait
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genotype
genetic makeup of an organism
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phenotype
physical characteristics of an organism
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Punnett square
a chart that shows all the possible combinations of alleles that can result from a genetic cross
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Genetics
the branch of biology that studies heredity and variation in organisms
