Answer: homogamy

AnswerCrossword Clue
homogamyThe simultaneous ripening of the stamens and pistils of a flower, ensuring self-pollination
homogamybreeding of like with like
homogamyInbreeding, esp. as a result of isolation
homogamyA state in which the flowers of a plant are all of one type (either hermaphrodite or of the same sex)
homogamyMarriage between people from similar sociological or educational backgrounds