Definition of isogamy in English:

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Pronunciation: /ʌɪˈsɒɡəmi/


[mass noun] Biology
Sexual reproduction by the fusion of similar gametes. Compare with anisogamy.
Example sentences
  • As isogamy is approached, sperm become less abundant, ova become relatively less rare, and competition between males for fertilization success is predicted to weaken.



Pronunciation: /ˌʌɪsəˈɡamiːt/
Example sentences
  • The haploid myxamoebae act as isogametes; individuals of different mating types pair and fuse to form diploid zygotes.
  • Reproduction is by biflagellate isogametes, these displaying a cruciate, 11 o'clock - 5 o'clock configuration of the flagellar apparatus.


Example sentences
  • Uniparental inheritance of mitochondria has also been reported in the isogamous protist Physarum polycephalum.
  • However, these cellular mechanisms cannot explain uniparental mtDNA inheritance in isogamous species with equal-sized and undifferentiated gametes.
  • Sexual reproduction is known only in two genera: Botrydium, in which the sex cells are isogamous, and Vaucheria, in which the cells are oogamous.


Late 19th century: from iso- 'equal' + Greek -gamia (from gamos 'marriage').

For editors and proofreaders

Line breaks: isog|amy

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