Medical Dictionary

overdominance o·ver·dom·i·nance (ō'vər-dŏm'ə-nəns)
The condition in which a heterozygote has a phenotype that is more pronounced or better adapted than that of either homozygote.

o'ver·dom'i·nant adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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