English to Danish Meaning :: parthenogenesis

Parthenogenesis :
- partenogenese

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Noun(1) human conception without fertilization by a man(2) process in which an unfertilized egg develops into a new individual; common among insects and some other arthropods

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(1) Reproductive modes include sexual reproduction and parthenogenesis , but much remains to be known about development.(2) In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis .(3) cyclic parthenogenesis is well displayed in aphids(4) This process is known as parthenogenesis , where unfertilized eggs develop into embryos without sperm.(5) Some species consist only of females that produce their daughters from unfertilized eggs, a type of reproduction called parthenogenesis .(6) Gynogenesis is like parthenogenesis in that diploid zygotes inheriting all chromosomes from their mother can develop without a genetic contribution from males.(7) In parthenogenetically reproducing populations, traits involved in sexual reproduction are no longer under selection and thus potentially subject to vestigialization.(8) In parthenogenetic populations, traits historically involved in sexual reproduction are no longer under selection and potentially subject to such reduction.(9) Most animal species that reproduce parthenogenetically also display a phase of sexual behaviour and sexual reproduction.(10) The first hypothesis assumes that triploidy is associated with the origin of parthenogenesis and that both diploid and tetraploid parthenogenetic forms are derived.(11) 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.(12) Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing, fertilized eggs, which can survive for decades in sediment egg banks.(13) In apomictic plants, embryos develop parthenogenetically (without fertilization) from unreduced somatic or gametophytic cells.(14) However, such unmated workers can produce either males or females parthenogenetically .(15) It reportedly reproduces exclusively by parthenogenetic female gametes and fragmentation.(16) Some make their hosts parthenogenetic , rendering the need for sexual reproduction irrelevant.
1. parthenogeny ::
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English to Danish Dictionary: parthenogenesis

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