different between parthenogenesis vs digenesis
parthenogenesis
English
Etymology
From parthen- +? -o- +? -genesis, from Ancient Greek ???????? (parthénos, “virgin”) and ??????? (génesis, “origin, creation, generation”).
Pronunciation
- (Received Pronunciation) enPR: pär'th?n?j??n?s?s, pär'th?n?j??n?s?s, IPA(key): /?p????n???d???n?s?s/, /?p????n???d???n?s?s/
- (General American) enPR: pär'th?n?j??n?s?s, IPA(key): /?p????no??d???n?s?s/, /?p????no??d???n?s?s/
- Hyphenation: par?the?no?gen?e?sis
Noun
parthenogenesis (usually uncountable, plural parthenogeneses)
- (biology) Referring to various aspects of asexual reproduction:
- (biology, countable, uncountable) (An instance of) reproduction by the development of a single gamete (an ovum or ovule) without fertilisation by a gamete of the opposite sex; compare metagenesis, heterogamy.
- 2008 October 15, "Virgin Shark Gives Birth", AFP via Australian Broadcasting Corporation:
- Scientists say the birth is the second confirmed instance of a shark being conceived by parthenogenesis, a process in which an unfertilised egg develops into a new individual.
- 2008 October 15, "Virgin Shark Gives Birth", AFP via Australian Broadcasting Corporation:
- (biology, uncountable, formerly) Asexual reproduction in toto; agamogenesis.
- (biology, countable, uncountable) (An instance of) reproduction by the development of a single gamete (an ovum or ovule) without fertilisation by a gamete of the opposite sex; compare metagenesis, heterogamy.
- (countable and uncountable) figurative uses of the biological senses
- 1870: James Russell Lowell, Among My Books, series I, Shakespeare Once More, page 223
- We may learn, to be sure, plenty of lessons from Shakespeare.?We are not likely to have kingdoms to divide, crowns foretold us by weird sisters, a father’s death to avenge, or to kill our wives from jealously?;?but Lear may teach us to draw the line more clearly between a wise generosity and a loose-handed weakness of giving?;?Macbeth, how one sin involves another, and forever another, by a fatal parthenogenesis, and that the key which unlocks forbidden doors to our will or passion leaves a stain on the hand, that may not be so dark as blood, but that will not out?;?Hamlet, that all the noblest gifts of person, temperament, and mind slip like sand through the grasp of an infirm purpose?;?Othello, that the perpetual silt of some one weakness, the eddies of a suspicious temper depositing their one impalpable layer after another, may build up a shoal on which an heroic life and an otherwise magnanimous nature may bilge and go to pieces.
- 1870: James Russell Lowell, Among My Books, series I, Shakespeare Once More, page 223
- (theology) Virgin birth, in reference to the Virgin Mary and Jesus Christ.
Related terms
- parthenogen
- parthenogenetic
- parthenote
Translations
References
- “parthenogenesis” listed in the Oxford English Dictionary [second edition; 1989]
??Deriving directly from Ancient Greek ???????? (parthénos) + ??????? (génesis); pronounced: /?p????n???d??n?s?s/; defined in the uncountable biologic senses only. - “parthenogenesis, n.” listed in the Oxford English Dictionary [Draft revision; Dec. 2008]
??Deriving from the English affixes partheno- + -genesis; pronounced: Brit. /?p????n?(?)?d??n?s?s/, U.S. /??p?r??no??d??n?s?s/; defined in the uncountable biologic senses (as well as the figurative sense deriving thence) only. - parthenogenesis in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
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digenesis
English
Etymology
di- +? -genesis
Pronunciation
- (UK) IPA(key): /da??d??n?s?s/
Noun
digenesis (countable and uncountable, plural digeneses)
- (biology) The alternation of sexual and asexual methods of reproduction.
Synonyms
- metagenesis
Derived terms
- digenetic
See also
- parthenogenesis
digenesis From the web:
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- what is diagenesis catagenesis and metagenesis
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