parental generation


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Related to parental generation: filial generation, First filial generation

generation

 [jen″er-a´shun]
1. the process of reproduction.
2. a class composed of all individuals removed by the same number of successive ancestors from a common predecessor, or occupying positions on the same level in a genealogical (pedigree) chart.
alternate generation reproduction by alternate asexual and sexual means in an animal or plant species.
asexual generation (direct generation) production of a new organism not originating from union of gametes.
first filial generation the first-generation offspring of two parents; symbol F1.
parental generation the generation with which a particular genetic study is begun; symbol P1.
second filial generation all of the offspring produced by two individuals of the first filial generation; symbol F2.
sexual generation production of a new organism from the cell formed by the union of a male gamete (spermatozoon) and a female gamete (oocyte).
spontaneous generation the discredited concept of continuous generation of living organisms from nonliving matter.

pa·ren·tal gen·er·a·tion (P1),

the parents of a mating, commonly experimental, involving contrasting genotypes; the original mating of a genetic experiment; parents of the F1 generation.

pa·ren·tal gen·er·a·tion

(P1) (pă-ren'tăl jen'ĕr-ā'shŭn)
The parents of a mating, commonly experimental, involving contrasting genotypes; the original mating of a genetic experiment; parents of the F1 generation.

parental generation (P)

the members of a cross between PURE BREEDING LINES, giving rise to offspring called the F1.
References in periodicals archive ?
This discrepancy did not affect the yield in the parental generation. Obviously, it would be wise to assert that plants that first reached anthesis should also be the first to mature.
The lower rate of return to schooling among the parental generation may hinder the progress of the children of immigrants.
For instance, phenotypic correlations for females in the parental generation of the controls were all significant (P [less than] 0.001) and were 0.33 (crossvein and wing width), 0.64 (crossvein and wing length), and 0.53 (wing width and length).
The parental generation larvae, prepupae, and pupae were heat shocked in an identical manner to that used for the parental generation adults.
Previous studies have demonstrated that the exposure of the parental generation to the antigen under investigation influenced the outcome of the sensitization study with the offspring (Knippels et al.
Maternal effects provide a nongenetic mechanism by which environmental variation in the parental generation affects the phenotype of their progeny (Riska et al.
All values of these parameters were obtained from the study of the parental generation. The overall fitness of each strain was obtained [TABULAR DATA FOR TABLE 2 OMITTED] by averaging values for every individual fish; it was expressed by the least squares mean and standard error due to unequal numbers of replicates in each of the six treatment combinations.
Under the arrhenotoky condition, no significant decline in the survival rate of the progeny occurred after exposure of the parental generation to 41[degrees]C for up to 12 h, but after exposure for 24 and 36 h, the decline was significant ([F.sub.(5,12)] = 12.50, P = 0.0002).
These beetles are subsequently referred to as the parental generation. To create treatment lines for Generation 1, pairs were confined in a 30-mm petri dish containing one A.
The lowest average was observed in the parental generation while the highest corresponded to the fifth generation (F = 6.21; df = 5, 66; P < 0.001).
The modes of the [F.sub.2] worms corresponded to those of the parental generation. The two estimates of the minimum number of genetic factors that contribute to the difference in resistance between the South Cove and Foundry Cove populations of L.

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