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unit 5 lesson 5 & 4
| Term | Definition |
|---|---|
| Heredity | The passing of genetic material from parent to offspring |
| Gene | One set of instructions for an inherited trait |
| Allele | One of the alternative forms of a gene that governs a characteristic, such as hair color |
| Genotype | The entire genetic makeup of an organism |
| Phenotype | An organisms appearance or other detectable characteristics |
| Dominant | In genetics, describes an allele that is fully expressed whenever the allele is present in an individual |
| Recessive | Describes an allele that will be masked unless the organism is homozygous for the trait |
| Incomplete Dominance | A condition in which two alleles are expressed such that the phenotype of a heterozygous individual is an intermediate of the prototypes of the two homozygous |
| Codominance | A condition in which two alleles are expressed such that the phenotype of a heterozygous individual is a combination of the prototypes of the two homozygous parents |
| Punnett Square | A graphic used to predict the results of a genetic cross |
| Probability | The likelihood that a possible future event will occur in any given instance of the event |
| Ratio | A comparison of two numbers using division |
| Pedigree | A diagram the shows the occurrence of a genetic trait in several generations of a family |
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