heredity - the passing of traits from parents to offspring, genetics - the scientific study of how traits are passed from parents to offspring, dominant trait - a genetic factor that blocks another genetic factor, recessive trait - a genetic factor that is blocked by the presence of another factor, phenotype - how a trait appear or is expressed, genotype - the alleles of all the genes on an organism's chromosomes, homozygous - a genotype in which the two alleles of a gene are the same, heterozygous - a genotype in which the two alleles of a gene are different, gene - a section of DNA on a chromosome that has genetic information for one trait, allele - a different form of a gene, Punnett square - a model that is used to show the probability of all possible genotypes and phenotypes of offspring, self-pollinate - pollen is moved to flowers of the same plant, cross-pollinate - pollen is moved to flowers on a different plant, hybrid - a mix produced by two different parent organisms, purebred - always passes down the same trait to offspring, probability - the likelihood that a particular event will occur, pedigree - shows the phenotypes of genetically related family members,

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