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genetics p.180

QuestionAnswer
genotype A organism’s genetic combination
dihybrid cross fertilization between two organisms to study two different traits.
monohybrid cross fertilization between two organisms to study one trait.
heterozygous having non identical alleles for a trait
homozygous having identical alleles for a trait.
phenotype outward appearance of an organism
probability the likelihood a specific event will occur
Punnett Square A diagram used to predict possible genetic outcomes
genotypic ratio The ratio of genotypes
phenotypic ratio the ratio of phenotypes
testcross when an individual of unknown genotype is crossed with a homozygous recessive.
complete dominance When a dominant allele masks the recessive.
incomplete dominance When both alleles have an intermediate amount of expression and neither is strong enough to mask the other
codominance Neither allele is intermediate-both are expressed at once, like spots.
Created by: jensenc
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