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Law of Unit Characters



(genetics) A Mendelian law which states that every genetic character of an organism is controlled by unit factors existing in pairs.


Gregor Mendel set seminal theories on heredity and variation. In Law of Unit Characters, he described the unit characters as the factors of inheritance. Furthermore, he argued that these unit factors exist in two sets or in pairs (where one set is inherited from each parent). These factors are now referred to as genes whereas the alternate forms are called alleles.

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