Chapter 9.2 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Genotype | an organism's genetic makeup
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| Phenotype | an organism's appearance
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| Homozygous | when both alleles of a pair are alike
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| Heterozygous | when the two alleles of a pair are different
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| Probability | the likelihood that a specific event will occur
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| Monohybrid Cross | a cross in which only one characteristic is tracked
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| Punnett Square | a diagram biologists use that aid them in predicting the probable distribution of inherited traits in the offspring
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| Genotypic Ratio | the ratio of the genotypes that appear in offspring
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| Phenotypic Ratio | the ratio of the offspring's phenotypes
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| Testcross | in which an individual of unknown genotype is crossed with a homozygous recessive individual; can determine the genotype of any individual whose phenotype expresses the dominant trait
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| Complete Dominance | when one allele was completely dominant over another
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| Incomplete Dominance | when the offspring have a phenotype in between that of the parents; occurs when the phenotype of a heterozygote is intermediate between the phenotypes determined by the dominant and recessive traits
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| Codominance | occurs when both alleles for a gene are expressed in a heterozygous offspring; neither allele is dominant or recessive, nor do the alleles blend in the phenotype
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| Dihybrid Cross | a cross in which two characteristics are tracked
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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