9.2 Bio
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 | the entire genetic makeup of an organism; also the combination of genes for one or more specific traits
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phenotype | an organisms appearance or other detectable characteristic that results from the organisms genotype and the environment
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homozygous | describes an individual that has identical alleles for a trait on both homologous chromosomes
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heterozygous | describes an individual that has 2 different alleles for a trait
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probability | the likelihood that a possible future event will occur in any given instance of the event
mathematical equation- number of times 1 outcome of any event is likely to occur to the number of possible outcomes of the event
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monohybrid cross | a cross between individuals that involves 1 pair of contrasting traits
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Punnett square | a graphic used to predict the results of a genetic cross
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genotypic ratio | the ratio of the genotypes that appear in offspring
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phenotypic ratio | the ratio of phenotypes produced by a cross
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testcross | the crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype
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complete dominance | a relationship in which 1 allele is completely dominant over another
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incomplete dominance | a condition in which a trait in an individual is intermediate between the phenotype of the individuals 2 parents because the dominant allele is unable to express itself fully
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codominance | a condition in which both alleles for a gene are fully expressed
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dihybrid cross | a cross between individuals that have different alleles for the same gene
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