Genetics
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| section of DNA that codes for a protein and determines a trait | ||
| specific characteristic that varies from one individual to another | ||
| form of a gene | ||
| trait that will show up in an organism's phenotype if gene is present | ||
| trait that will only appear in the phenotype if organism inherits two of them; covered up by the dominant gene | ||
| separation of alleles during meiosis or gamete formation | ||
| sex cell; sperm or egg | ||
| offspring of a cross between parents with different traits; heterozygous | ||
| inherited two identical alleles for a trait; homozygous or purebred | ||
| likelihood an event will occur | ||
| physical characteristics of an organism | ||
| diagram that shows the possible results of a genetic cross; parents' gametes on top and left, offsprings' genotypes inside | ||
| genetic makeup of an organism | ||
| has two identical alleles for a particular trait; true-breeding or purebred, ex. PP or pp | ||
| has two different alleles for a particular trait; hybrid, ex. Pp | ||
| principle that genes do not influence each other's inheritance because they are separated independently during meiosis | ||
| three or more alleles exist for a particular trait | ||
| creates a blended phenotype; one allele is not completely dominant over the other | ||
| trait controlled by two or more genes; shows a wide variety of phenotypes | ||
| both genes contribute to the phenotype of the organism, ex. spotted or striped | ||
| error in meiosis in which homologous chromosomes don't separate; gametes end up with wrong number of chromosomes | ||
| trait related to a gene that is found on the X or Y chromosomes |