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An alternate form that a gene may have for a single trait; can be dominant or recessive


The study of how traits are inherited through the actions of alleles

Punnett Square

A tool to predict the probability of certain traits in offspring that shows the different ways alleles can combine combinarse)

Sex Linked Trait

A trait that is determined by a gene found on one of the sex chromosomes, such as the X chromosome or the Y chromosome in humans


The classification of being male or female

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