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单词 anisogamy
释义

Definition of anisogamy in English:

anisogamy

nounˌanʌɪˈsɒɡəmiˌanīˈsäɡəmē
mass nounBiology
  • Sexual reproduction by the fusion of dissimilar gametes.

    Compare with isogamy
    Example sentencesExamples
    • Since anisogamy (gametes of different sizes: eggs and sperm) is what defines the sexes it is thus a prerequisite for sexual dimorphism.
    • The principle behind anisogamy is a division of the labour necessary for two gametes to unite and successfully develop.
    • Isogamy and anisogamy, and sometimes oogamy, may occur.
    • Meiosis produces 4 gametes, ie. isogamy, anisogamy and oogamy, which through mitosis develops into mature gametes.
    • In many species with gametes of different sizes (anisogamy), sexual crosses typically produce progeny with mitochondrial DNA inherited from the larger gamete.
    • A popular theory has proposed that anisogamy originated through disruptive selection acting on an ancestral isogamous population.
    • Orders that are characterized by oogamy (or pronounced anisogamy) and are reported to have large female gametes have the largest nuclear genomes observed regardless of their phylogenetic position.

Derivatives

  • anisogamous

  • adjectiveanʌɪˈsɒɡəməs
    Biology
    • Chlamydomonas braunii is just like C. reinhardtii, except for the fact that it is anisogamous.
      Example sentencesExamples
      • The gametes are isogamous or anisogamous and are produced from the plurilocular sporangia of gametophytes.
      • These subsequent studies will allow him to compare the genetics of isogamous and anisogamous processes, possibly leading to new insights for the control of Plasmodium transmission.
      • Sexual reproduction is variable and may be isogamous, anisogamous or oogamous.
      • These produce flagellated anisogamous gametes that are released into the water to find each other.
      • Using individual-based models we show that gamete size dimorphism frequently leads to anisogamous populations consisting of two types of genotypes that differ in the size of the gametes they produce.

Origin

Late 19th century: from Greek anisos 'unequal' + -gamy (from gamos 'marriage').

 
 

Definition of anisogamy in US English:

anisogamy

nounˌanīˈsäɡəmē
Biology
  • Sexual reproduction by the fusion of dissimilar gametes.

    Often contrasted with isogamy
    Example sentencesExamples
    • Orders that are characterized by oogamy (or pronounced anisogamy) and are reported to have large female gametes have the largest nuclear genomes observed regardless of their phylogenetic position.
    • In many species with gametes of different sizes (anisogamy), sexual crosses typically produce progeny with mitochondrial DNA inherited from the larger gamete.
    • Isogamy and anisogamy, and sometimes oogamy, may occur.
    • Since anisogamy (gametes of different sizes: eggs and sperm) is what defines the sexes it is thus a prerequisite for sexual dimorphism.
    • A popular theory has proposed that anisogamy originated through disruptive selection acting on an ancestral isogamous population.
    • The principle behind anisogamy is a division of the labour necessary for two gametes to unite and successfully develop.
    • Meiosis produces 4 gametes, ie. isogamy, anisogamy and oogamy, which through mitosis develops into mature gametes.

Origin

Late 19th century: from Greek anisos ‘unequal’ + -gamy (from gamos ‘marriage’).

 
 
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更新时间:2024/9/21 14:41:23