overdominance

[ ō′vər-dŏmə-nəns ]

n.

The condition in which a heterozygote has a phenotype that is more pronounced or better adapted than that of either homozygote.

Nearby words

  1. overdetermined,
  2. overdevelop,
  3. overdeviate,
  4. overdo,
  5. overdog,
  6. overdone,
  7. overdoor,
  8. overdose,
  9. overdraft,
  10. overdraft checking account

Related formso′ver•domi•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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