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 importance of self-incompatibility methods in pollinuhibtbe -sd) c48i2*m5 va: saatnam 3, 6l fj9yz(rb;f3/cxh3 *asu fwsion and fertilisation lcm, ;ws u3j * a9s3bffzn (a6xyfh3r/which achieve greater genetic 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.
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