first filial generation
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Related to first filial generation: second filial generation
first filial generation[¦fərst ¦fil·ē·əl jen·ə′rā·shən]
The first generation resulting from a cross between parents homozygous for different alleles at a locus; all members are heterozygous at the locus. Symbolized F1.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.