heterozygous

Term: heterozygous

Origin: Anc Greek

έτερος/heteros(=different, other)

ζυγός/zygos(=yoke)

  

Coined:



William  Bateson (1861 –1926)



The term introduced in 1902 by a British geneticist W Bateson (1861 –1926) and  British botanist and plant geneticist Edith Rebecca Saunders (1865—1945) for a zygote, or a diploid individual derived from it, which carries both members of a pair of alleles.

Definition:

The individual who carries two different alleles at corresponding loci on homologous chromosomes.