Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.


From Biology-Online Dictionary | Biology-Online Dictionary
Jump to: navigation, search


noun, plural: tetrads

(1) (cell biology) A group of four closely associated chromatids of a homologous pair formed by synapsis.

(2) (genetics) The four spores of yeast.

(3) (chemistry) A tetravalent atom; a quadrivalent element.

(4) A group consisting of four; the number four.


In cell biology, a tetrad pertains to the structure formed by the synapsis of homologous chromosomes during the prophase I of meiosis.

Word origin: Greek tetras, tetrad-

Synonym: bivalent

Related term: