oogamy

英語（米国） (en-US) 英語（イギリス） (en-GB)

IPA（発音記号）

/oʊˈɒɡəmi/

名詞

不可算名詞

(biology) A form of anisogamy (heterogamy) in which the female gamete (e.g. ovum) is significantly larger than the male gamete (sperm) and is non-motile.

日本語の意味

生物学における用語で、雌性配偶子（卵子）が雄性配偶子（精子）より著しく大きく、運動性を持たない状態の異形受精（すなわち、異型配偶子形成）の一形態を意味する。

英語の意味

(biology) A form of anisogamy (heterogamy) in which the female gamete (e.g. ovum) is significantly larger than the male gamete (sperm) and is non-motile.

このボタンはなに？

Oogamy, a reproductive pattern where the female gamete is large and non-motile while the male gamete is small and motile, evolved early in many lineages.

雌配偶子（卵）が雄配偶子（精子）より著しく大きく運動性を持たないという生殖様式は、多くの系統で初期に進化しました。

詳細

意味（1）

(biology) A form of anisogamy (heterogamy) in which the female gamete (e.g. ovum) is significantly larger than the male gamete (sperm) and is non-motile.

Isogamy is considered to be the most primitive and oogamy the most advanced type of sexual reproduction. The evolution from isogamy to oogamy through unisogamy is seen in different groups of the Chlorophyceae. Since oogamy has arisen quite independently in several groups, sometimes even within the limits of a single genus (e.g., Chlamydymonas), not much phylogenetic significance can be attached to it.

詳細