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 o :ltqxur2-pq9b+ t fba :bewh ,h1x4+pf selfc qxj;l d/dw5:jmbwn+bsv (;2-incompatibility methods in pollination and fertilisation which ajb5vq2bdd m+l /c( :x ;wnw;sjchieve 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.
本题详细解析:
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