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the passing of traits from parents to offspring


The scientific study of heredity


specific characteristic that varies from one individual to another


one of a number of different forms of a gene


the offspring of many generations that have the same traits


offspring of crosses between parents with different traits


trait that will show up in an organism's phenotype if gene is present


The inherited characteristic often masked by the dominant characteristic and not seen in an organism.


having two identical alleles for a trait


genetic makeup of an organism


an organism in which two alleles for a particular trait are not identical


physical characteristics of an organism

punnett square

a chart that shows all the possible combinations of alleles that can result from a genetic cross

sex linked gene

gene located on the X or Y chromosome

multiple allele

presence of more than two alleles for a genetic trait


a diagram that shows the occurrence of a genetic trait in several generations of a family


change in a DNA sequence that affects genetic information

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