Sewall Wright effect

Sew·​all Wright effect | \ˈsüəlˈrīt-\

Definition of Sewall Wright effect 

: differentiation within a group arising from chance fixation of nonadaptive characters in small isolated populations

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Sewall Wright effect

after Sewall Wright, born 1889 American geneticist

Keep scrolling for more

Learn More about Sewall Wright effect

Share Sewall Wright effect

Statistics for Sewall Wright effect

Look-up Popularity

Comments on Sewall Wright effect

What made you want to look up Sewall Wright effect? Please tell us where you read or heard it (including the quote, if possible).


amusing and light sparring with words

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!