isogamy
/ʌɪˈsɒɡəmi
/noun [mass noun] Biology
Sexual reproduction by the fusion of similar gametes. Compare with anisogamy.As isogamy is approached, sperm become less abundant, ova become relatively less rare, and competition between males for fertilization success is predicted to weaken.
Derivatives
isogamete
/ noun ...- 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.
isogamous
- 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.
Origin
Late 19th century: from iso- 'equal' + Greek -gamia (from gamos 'marriage').
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