A) Jordon
B) Koelreuter
C) Shull
D) Johanson
Correct Answer: B
Solution :
Hybrid vigour was discovered by Koelreuter (1763) in tobacco. It is the increased vigour. growth, yield or function of a hybrid, over the parents, resulting from the crossing of genetically unlike organisms. Heterosis term given by G.H. Shull is also known as hybrid vigour. Johanson coined the term gene, genotype alsophenotype.
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