Sentence Examples with the word Heterogamy

Again, among Siphonales only one family (Vaucheriaceae)has reached the stage of oogamy, although an incipient heterogamy is said to occur in two other families (Codiaceae, Bryoosidaceae).

The Cutleriaceae exhibit a heterogamy in which the female sexual cell is not highly specialized, as it is in the groups already described.