Term 
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        Definition 
        
        | An observable heritable feature |  
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        Definition 
        
        | Any detectable variant in a genetic character |  
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        Definition 
        
        | In genetics, the mating, or crossing, of two true-breeding varieties. |  
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        Definition 
        
        | Referring to plants that produce offspring of the same variety when they self-pollinate |  
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        Definition 
        
        | The parent individuals from which offspring are derived in studies of inheritance; P stands for “parental.” |  
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        Definition 
        
        | The first filial, or hybrid, offspring in a series of genetic crosses. |  
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        Definition 
        
        | Offspring resulting from interbreeding of the hybrid F1 generation. |  
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        Definition 
        
        | the transfer of pollen from the anthers to the stigma of the same flower or of another flower on the same plant |  
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        Definition 
        
        | An allele that is fully expressed in the phenotype of a heterozygote. |  
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        Term 
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        Definition 
        
        | An allele whose phenotypic effect is not observed in a heterozygote. |  
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        Term 
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        Definition 
        
        | A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses) |  
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        Term 
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        Definition 
        
        | Any of the alternative versions of a gene that produce distinguishable phenotypic effects. |  
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        Definition 
        
        | A diagram used in the study of inheritance to show the predicted results of random fertilization in genetic crosses. |  
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        Definition 
        
        | Having two identical alleles for a given gene. |  
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        Term 
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        Definition 
        
        | Having two different alleles for a given gene. |  
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        Term 
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        Definition 
        
        | The physical and physiological traits of an organism, which are determined by its genetic makeup. |  
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        Term 
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        Definition 
        
        | The genetic makeup, or set of alleles, of an organism |  
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        Term 
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        Definition 
        
        | Breeding an organism of unknown genotype with a homozygous recessive individual to determine the unknown genotype. The ratio of phenotypes in the offspring reveals the unknown genotype. |  
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        Term 
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        Definition 
        
        | An organism that is heterozygous with respect to a single gene of interest. All the offspring from a cross between parents homozygous for different alleles are monohybrids. For example, parents of genotypes AA and aa produce a monohybrid of genotype Aa. |  
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        Term 
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        Definition 
        
        | An organism that is heterozygous with respect to two genes of interest. All the offspring from a cross between parents doubly homozygous for different alleles are dihybrids. For example, parents of genotypes AABB and aabb produce a dihybrid of genotype AaBb. |  
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        Term 
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        Definition 
        
        | A diagram of a family tree showing the occurrence of heritable characters in parents and offspring over multiple generation |  
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