Trait, A characteristic that an organism can pass on to its offspring through its genes., Genetics, The scientific study of heredity, Gene, A segment of DNA on a chromosome that codes for a specific trait., Dominant allele, An allele whose trait always shows up in the organism when the allele is present., Recessive allele, An allele that is hidden whenever the dominant allele is present, Punnent square, A chart that shows all the possible combinations of alleles that can result from a genetic cross, Phenotype, An organism's Physical appearance, or visible traits., Genotype, An organism's Genetic makeup, or allele combinations., Chromosome, A long DNA molecule that contains genetic information, DNA, A complex molecule containing the genetic information that makes up the chromosomes..

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