1. Having only one of a pair of genes, for example the unpaired X chromosomes of a male mammal

Encyclopedia: Hemizygous

• working day
• working dog
• working girl
• working group
• working memory
• working out
• working papers
• working party
• working person
• working principle
• working rule
• working week
• working-class
• workingman
• workings
• workless
• workload
• workman
• workmanlike
• workmanship
• workmate
• workmen's compensation
• workout
• workout suit
• workpackage