polyembryony: difference between revisions
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==English== |
==English== |
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{{Webster 1913}} |
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===Noun=== |
===Noun=== |
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# {{lb|en|botany}} The [[production]] of two or more [[embryo]]s in one [[seed]], due either to the [[existence]] and [[fertilization]] of more than one [[embryonic]] [[sac]] or to the [[origination]] of embryos outside of the embryonic sac. |
# {{lb|en|botany}} The [[production]] of two or more [[embryo]]s in one [[seed]], due either to the [[existence]] and [[fertilization]] of more than one [[embryonic]] [[sac]] or to the [[origination]] of embryos outside of the embryonic sac. |
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#* {{quote-book|en|year=2012 |title=Embryology of Angiosperms |author=B. M. Johri |page=447 |ISBN=3642693024 |passage=By its nature, that is whether it develops with or without fertilization, simple '''polyembryony''' can be sexual or asexual. }} |
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#* {{quote-book|en|year=2014 |title=Reproductive Biology of Plants |author=Kishan Gopal Ramawat; Jean-Michel Mérillon; K. R. Shivanna |page=356|ISBN=1482201321 | passage='''Polyembryony''' was first reported by Leeuwenhoek in citrus as early as 1719 and the different cases of '''polyembryony''' were studied by Braun in 1859. }} |
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# {{lb|en|biology}} The production of two or more embryos from a single [[fertilize]]d [[egg]]. |
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#* {{quote-book|en|year=1989 |title=Functional Biology of Clonal Animals |author=Roger Neville Hughes |page=90 |ISBN=0412331306 |passage=In all these groups cloning, where it occurs, must be through '''polyembryony''' or parthenogenesis. }} |
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#* {{quote-book|en|year=2005 |title=Human Malformations and Related Anomalies |author=Roger E. Stevenson; Judith G. Hall |page=1381 |ISBN=019974808X |passage=Despite their utility in research, litters produced by '''polyembryony''' lack the advantages conferred by either asexual or sexual reproduction. }} |
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#* {{quote-book|en|year=2014 |title=Genetics in the Wild|author=John C. Avise |page= |ISBN=1588344290 |passage=One form of clonal reproduction begins when a fertilized egg divides a few times in the womb before initiating embryonic development. In humans, this can lead nine months later to the birth of identical (monozygotic) twins. This phenomenon, known as '''polyembryony''', occurs sporadically in many mammal species. However, only in armadillos does '''polyembryony''' happen consistently, in each and every pregnancy. }} |
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====Translations==== |
====Translations==== |
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* French: {{t|fr|polyembryonie|f}} |
* French: {{t|fr|polyembryonie|f}} |
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===References=== |
===References=== |
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* {{R:Webster 1913}} |
* {{R:Webster 1913}} |
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[[ku:polyembryony]] |
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[[pl:polyembryony]] |
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[[ta:polyembryony]] |
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[[vi:polyembryony]] |
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[[zh:polyembryony]] |
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Latest revision as of 01:41, 20 August 2023
English
[edit]Noun
[edit]polyembryony (uncountable)
- (botany) The production of two or more embryos in one seed, due either to the existence and fertilization of more than one embryonic sac or to the origination of embryos outside of the embryonic sac.
- 2012, B. M. Johri, Embryology of Angiosperms, →ISBN, page 447:
- By its nature, that is whether it develops with or without fertilization, simple polyembryony can be sexual or asexual.
- 2014, Kishan Gopal Ramawat, Jean-Michel Mérillon, K. R. Shivanna, Reproductive Biology of Plants, →ISBN, page 356:
- Polyembryony was first reported by Leeuwenhoek in citrus as early as 1719 and the different cases of polyembryony were studied by Braun in 1859.
- (biology) The production of two or more embryos from a single fertilized egg.
- 1989, Roger Neville Hughes, Functional Biology of Clonal Animals, →ISBN, page 90:
- In all these groups cloning, where it occurs, must be through polyembryony or parthenogenesis.
- 2005, Roger E. Stevenson, Judith G. Hall, Human Malformations and Related Anomalies, →ISBN, page 1381:
- Despite their utility in research, litters produced by polyembryony lack the advantages conferred by either asexual or sexual reproduction.
- 2014, John C. Avise, Genetics in the Wild, →ISBN:
- One form of clonal reproduction begins when a fertilized egg divides a few times in the womb before initiating embryonic development. In humans, this can lead nine months later to the birth of identical (monozygotic) twins. This phenomenon, known as polyembryony, occurs sporadically in many mammal species. However, only in armadillos does polyembryony happen consistently, in each and every pregnancy.
Translations
[edit]Translations
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References
[edit]- “polyembryony”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.