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heredity the passing of traits from parent to offspring
recombinant DNA one form of genetic engineering in which a useful segment of DNA is inserted into a bacterium
genetics the study of how traits are inherited through the interaction of alleles
sex-linked gene an allele carried on a sex chromosome (the X or Y 23rd chromosome)
recessive the trait that seems to disappear in the organism because it is covered up, or dominated
probability the chances that an event will occur
genotype the genetic makeup of an organism, usually shown in letters
phenotype the way an organism looks and behaves as a result in its genotype
incomplete dominance when the offspring of two homozygous parents shows an intermediate (in-between) phenotype
polygenic inheritance occurs when a group of gene pairs acts together to produce a trait
alleles the different forms of a trait that make up a gene pair
genes section of DNA on a chromosome that contains instructions for making specific proteins
hybrid organism that receives different genetic information from each parent
dominant the form of a trait that covers up the recessive form
homozygous an organism with two alleles that are the same for a trait (TT or tt, for example)
heterozygous an organism that has two different alleles for a trait (Tt, for example)
Created by: MsHollinger