Definition of parthenogenesis in English:

parthenogenesis

noun ˌpɑːθɪnə(ʊ)ˈdʒɛnɪsɪsˌpɑrθənoʊˈdʒɛnəsəs

mass nounBiology

Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants.
〔生〕孤雌生殖，单性生殖
cyclic parthenogenesis is well displayed in aphids
Example sentencesExamples
- Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development.
- In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis.
- Some species consist only of females that produce their daughters from unfertilized eggs, a type of reproduction called parthenogenesis.
- Gynogenesis is like parthenogenesis in that diploid zygotes inheriting all chromosomes from their mother can develop without a genetic contribution from males.
- This process is known as parthenogenesis, where unfertilized eggs develop into embryos without sperm.

Derivatives

parthenogenetic

adjective ˌpɑːθɪnə(ʊ)dʒəˈnɛtɪkˌpɑrθ(ə)noʊdʒəˈnɛdək

Biology

Some make their hosts parthenogenetic, rendering the need for sexual reproduction irrelevant.
Example sentencesExamples
- The first hypothesis assumes that triploidy is associated with the origin of parthenogenesis and that both diploid and tetraploid parthenogenetic forms are derived.
- It reportedly reproduces exclusively by parthenogenetic female gametes and fragmentation.
- In parthenogenetic populations, traits historically involved in sexual reproduction are no longer under selection and potentially subject to such reduction.
- Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing, fertilized eggs, which can survive for decades in sediment egg banks.

parthenogenetically

adverb ˌpɑːθɪnə(ʊ)dʒəˈnɛtɪk(ə)liˌpɑrθ(ə)noʊdʒəˈnɛdək(ə)li

Biology

However, such unmated workers can produce either males or females parthenogenetically.
Example sentencesExamples
- In parthenogenetically reproducing populations, traits involved in sexual reproduction are no longer under selection and thus potentially subject to vestigialization.
- An alternative sexual reproductive mode is, for instance, arrhenotoky, where males are produced parthenogenetically and are haploid, whereas females are diploid and produced from fertilized eggs.
- In apomictic plants, embryos develop parthenogenetically (without fertilization) from unreduced somatic or gametophytic cells.
- Most animal species that reproduce parthenogenetically also display a phase of sexual behaviour and sexual reproduction.

Origin

Mid 19th century: modern Latin, from Greek parthenos 'virgin' + genesis 'creation'.

Rhymes

genesis, pathogenesis

Definition of parthenogenesis in US English:

parthenogenesis

nounˌpɑrθənoʊˈdʒɛnəsəsˌpärTHənōˈjenəsəs

Biology

Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants.
〔生〕孤雌生殖，单性生殖
cyclic parthenogenesis is well displayed in aphids
Example sentencesExamples
- In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis.
- Gynogenesis is like parthenogenesis in that diploid zygotes inheriting all chromosomes from their mother can develop without a genetic contribution from males.
- Some species consist only of females that produce their daughters from unfertilized eggs, a type of reproduction called parthenogenesis.
- This process is known as parthenogenesis, where unfertilized eggs develop into embryos without sperm.
- Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development.

Origin

Mid 19th century: modern Latin, from Greek parthenos ‘virgin’ + genesis ‘creation’.

单词	parthenogenesis
释义	Definition of parthenogenesis in English: parthenogenesis noun ˌpɑːθɪnə(ʊ)ˈdʒɛnɪsɪsˌpɑrθənoʊˈdʒɛnəsəs mass nounBiology Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants. 〔生〕孤雌生殖，单性生殖 cyclic parthenogenesis is well displayed in aphids Example sentencesExamples Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development. In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis. Some species consist only of females that produce their daughters from unfertilized eggs, a type of reproduction called parthenogenesis. Gynogenesis is like parthenogenesis in that diploid zygotes inheriting all chromosomes from their mother can develop without a genetic contribution from males. This process is known as parthenogenesis, where unfertilized eggs develop into embryos without sperm. Derivatives parthenogenetic adjective ˌpɑːθɪnə(ʊ)dʒəˈnɛtɪkˌpɑrθ(ə)noʊdʒəˈnɛdək Biology Some make their hosts parthenogenetic, rendering the need for sexual reproduction irrelevant. Example sentencesExamples The first hypothesis assumes that triploidy is associated with the origin of parthenogenesis and that both diploid and tetraploid parthenogenetic forms are derived. It reportedly reproduces exclusively by parthenogenetic female gametes and fragmentation. In parthenogenetic populations, traits historically involved in sexual reproduction are no longer under selection and potentially subject to such reduction. Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing, fertilized eggs, which can survive for decades in sediment egg banks. parthenogenetically adverb ˌpɑːθɪnə(ʊ)dʒəˈnɛtɪk(ə)liˌpɑrθ(ə)noʊdʒəˈnɛdək(ə)li Biology However, such unmated workers can produce either males or females parthenogenetically. Example sentencesExamples In parthenogenetically reproducing populations, traits involved in sexual reproduction are no longer under selection and thus potentially subject to vestigialization. An alternative sexual reproductive mode is, for instance, arrhenotoky, where males are produced parthenogenetically and are haploid, whereas females are diploid and produced from fertilized eggs. In apomictic plants, embryos develop parthenogenetically (without fertilization) from unreduced somatic or gametophytic cells. Most animal species that reproduce parthenogenetically also display a phase of sexual behaviour and sexual reproduction. Origin Mid 19th century: modern Latin, from Greek parthenos 'virgin' + genesis 'creation'. Rhymes genesis, pathogenesis Definition of parthenogenesis in US English: parthenogenesis nounˌpɑrθənoʊˈdʒɛnəsəsˌpärTHənōˈjenəsəs Biology Reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants. 〔生〕孤雌生殖，单性生殖 cyclic parthenogenesis is well displayed in aphids Example sentencesExamples In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis. Gynogenesis is like parthenogenesis in that diploid zygotes inheriting all chromosomes from their mother can develop without a genetic contribution from males. Some species consist only of females that produce their daughters from unfertilized eggs, a type of reproduction called parthenogenesis. This process is known as parthenogenesis, where unfertilized eggs develop into embryos without sperm. Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development. Origin Mid 19th century: modern Latin, from Greek parthenos ‘virgin’ + genesis ‘creation’.
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