海洋环境 地球表面积5100000m2,其中70.84%被海洋所覆盖; 海洋面积中84%的水深超过2000m,平均深度3800m; 真光层(阳光所能到达的深度)即便是在最清洁的水中,其深度也不会超过200m
文件格式: PPT大小: 294KB页数: 36
Wherever seaweeds grow they have to compete for space, inorganic nutrients and light. They are also in constant danger of being grazed on by gastropods(腹足动物),fish, sea slugs(海蛤蝓) and sea urchins(海胆) and have some sinister tactics for putting off predators
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Plankton浮游生物 r Plankton: includes all living organisms both plants and animals that drift passively in the water Their distribution is often patchy and determined by the movement of ocean currents and tides
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What is Ecology Ecology is the study of relationships between organisms and the environment; Organisms |Ecology Environment
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第二节 数量性状的特征 第四节 遗传参数的估算及其应用 第五节 数量性状基因定位 第六节 近亲繁殖与杂种优势
文件格式: PPT大小: 373.5KB页数: 30
第一节细胞质遗传的概念和特点 第三节 叶绿体遗传 第四节 线粒体遗传 第六节 植物雄性不育的遗传 第三节 母体影响(maternal effect)
文件格式: PPT大小: 1.04MB页数: 45
海南大学:《普通遗传学》课程教学资源(PPT课件讲稿)第九章 基因重组与基因工程 Gene Recombination and Genetic Engineering
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