Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

heterozygous

play
adjective het·ero·zy·gous \-gəs\

Definition of heterozygous

  1. :  having the two alleles at corresponding loci on homologous chromosomes different for one or more loci



1902

First Known Use of heterozygous

1902


Medical Dictionary

heterozygous

play
adjective het·ero·zy·gous \-gəs\

Medical Definition of heterozygous

  1. :  having the two genes at corresponding loci on homologous chromosomes different for one or more loci—compare homozygous




Learn More about heterozygous


Seen and Heard

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

WORD OF THE DAY

to make consistent or congruous

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

accommodate accomodate acommodate acommadate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ