The term heterosis was coined by

Solution (By Examveda Team)

The term heterosis was coined by Shull (1914).
Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring.
The term heterosis to replace the older term heterozygosis, G. H. Shull aimed to avoid limiting the term to the effects that can be explained by heterozygosity in Mendelian inheritance.