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genetics p.180

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