本题目来源于试卷: SL/HL Topic D3.1 Reproduction，类别为 IB生物学
[问答题]
6. Explain the importjyga)l j3xs7zy)1 1yz ance of self-incompatibility me:z6 z6bt af8gtthods in pollination and fertilisation which achieve greater gen68 z:ztbf6 atgetic diversity within a species of flowering plant.
参考答案: Self-pollination is likely in many plants, as they produce large numbers of flowers on a single plant / pollinators may visit several flower on the same plant. Self pollination reduces genetic diversity in offspring. / it is a form of inbreeding.
Genetic diversity is increased by cross pollination/pollination between different plants.
Self-incompatibility methods are genetic mechanisms which prevent self-pollination/promote cross pollination. As pollen landing on the stigma does not grow a pollen tube, leaving non-self pollen to fertilize ovules.
本题详细解析:
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