asexual 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.

a·sex·u·al gen·er·a·tion

reproduction by fission, gemmation, or in any other way without union of the male and female cell, or conjugation.
See also: parthenogenesis. Synonym(s): heterogenesis (2) , nonsexual generation

a·sex·u·al gen·er·a·tion

(ā-sek'shū-ăl jen-ĕr-ā'shŭn) Reproduction by fission, gemmation, or in any other way without union of the male and female cells, or conjugation.
See also: parthenogenesis
Synonym(s): heterogenesis (2) , nonsexual generation.

单词	asexual generation
释义	DictionarySeegeneration asexual 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. a·sex·u·al gen·er·a·tion reproduction by fission, gemmation, or in any other way without union of the male and female cell, or conjugation. See also: parthenogenesis. Synonym(s): heterogenesis (2) , nonsexual generation a·sex·u·al gen·er·a·tion (ā-sek'shū-ăl jen-ĕr-ā'shŭn) Reproduction by fission, gemmation, or in any other way without union of the male and female cells, or conjugation. See also: parthenogenesis Synonym(s): heterogenesis (2) , nonsexual generation.
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