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the passing of traits from parent to offspring


the different forms of a trait that a gene may have


the study of how traits are inherited through the interactions of alleles


received different genetic information, or different alleles, for a trait from each parent

dominant factors

dominate or cover up a recessive factor

recessive factors

Factors that will be masked or hidden by the dominant factors

Punnett Square

a chart that shows all the possible combinations of alleles that can result from a genetic cross; An uppercase letter stands for dominant and a lowercase letter stands for recessive


genetic makeup of an organism; based on information from a Punnett Square


what an organism LOOKS like based on its genotype


an organism with two alleles for a trait that are the same


An organism that has two different alleles for a trait

incomplete dominance

When the offspring of two homozygous parents show an intermediate phenotype; one allele is not completely dominant over the ex: red flower and white flower = pink flower

polygenic inheritance

occurs when a group of gene pairs acts together to
produce a trait; eye color is an example

sex-linked gene

an allele inherited on a sex chromosome; color blindness is a sex-linked disorder

genetic engineering

experimenting with biological and chemical methods to change the arrangement of DNA that makes up a gene


the different forms of a gene

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