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a graphic depiction in grid form of how genes from each parent might combine in an offspring.
Etymology: Reginald C. Punnett, English geneticist, 1875-1967; OFr, esquarre
a matrix that shows all of the possible combinations of male and female gametes when one or more pairs of independent alleles are crossed. Letters representing the male and female gametes are placed along the left side and the top of the matrix, respectively. The genotypes of the offspring produced by each pairing of gametes occupy the cells in the matrix. See also pedigree.
Punnett squarea table devised by the British geneticist R. Punnett, in which all possible combinations of gametes and progeny are displayed in a grid structure. For example in the cross:
Aa, Bb x aa, Bb
the Punnett square would be as in Fig. 262.
Punnett,Reginald Crundall, English geneticist, 1875-1967.
Punnett square - a grid used in genetics. Synonym(s): checkerboard