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Filial generation


F1 is the first offspring or filial generation; F2 is the second; and so on.
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Filial generation (F1)
Denotes the different generations involved in breeding experiments. F1 is the first filial or filial-one generation i.e.
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Filial generation (F1, F2) Each generation of offspring in a breeding program, designated F1, F2, etc.
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F1 (first filial generation)
The first filial or hybrid offspring in a genetic cross-fertilization.
F2 (second filial generation) ...
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the first filial generation produced by crossing two parental lines
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
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F1 generation First filial generation; offspring from a genetic cross.
F2 generation Second filial generation of a genetic cross.
Facet A small, facelike articular surface.
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If the first filial generation (F1 generation) produces four offspring, the second filial generation, which occurs by crossing the members of the first filial generation, shows a phenotypic (appearance) ratio of 9:3:3:1.
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