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玉米籽粒有甜和非甜两个品种种皮有黄色和白色之分植株有高茎和矮茎两种现将纯合的黄种皮甜玉米植株的花粉给纯合的白种皮非甜玉米植株授粉结出的 Template






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sketch 871 vampire girl anime
sketch 2919 Winnie the Pooh by Greet Kros-Lolkus
sketch 4984 Zombie by London Waterlilly
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sketch 5313 Katy Perry by Monalisa Theresia

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sketch 2910 Harley Quinn Germaine Hoens
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sketch 5202 The Woman by Céline Chalois





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tomski玉米籽粒有甜和非甜两个品种种皮有黄色和白色之分植株有高茎和矮茎两种现将纯合的黄种皮甜玉米植株的花粉给纯合的白种皮非甜玉米植株授粉结出的 coloring
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知识库 玉米产业链专题研究玉米 新浪新闻 sketch template
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玉米籽粒有甜和非甜两个品种种皮有黄色和白色之分植株有高茎和矮茎两种现将纯合的黄种皮甜玉米植株的花粉给纯合的白种皮非甜玉米植株授粉结出的 sketch template
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玉米是一种雌雄同株的植物其顶部开雄花下部开雌花纯种甜玉米与纯种非甜玉米间行种植得到玉米粒如下表所示请分析回答 母本植株 果穗上所结 sketch template
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为了验证基因的分离定律甲乙两组同学都将非甜玉米和甜玉米间行种植分别挂牌然后按孟德尔的实验过程进行实验验证F2的分离比1用简图 sketch template
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玉米的性状中黄对白非甜对甜为显性两种性状独立遗传．让纯合的黄色非甜玉米与白色甜玉米杂交得到F1再让F1自交得到F2若在F2中有黄色 sketch template
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玉米籽粒有甜和非甜两个品种种皮有黄色和白色之分植株有高茎和矮茎两种现将纯合的黄种皮甜玉米植株的花粉给纯合的白种皮非甜玉米植株授粉结出的 sketch template
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27．玉米是一种雌雄同株植物其顶部开雄花下部叶腋处开雌花已知甜玉米与非甜玉米为一对相对性状且甜玉米对非甜玉米为隐性为探究玉米籽粒中 sketch template
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纯种甜玉米和纯种非甜玉米间行种植收获时现甜玉米果穗上有非甜玉米籽粒而非甜玉米果穗上无甜玉米籽粒原因是 A．甜是显性性状 B．非甜是显性 sketch template
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玉米是一种雌雄同株植物下表表示5个玉米纯系的表现型相应的基因型及基因所在的染色体其中 品系均只有一个性状属隐性其他性状均为显性 sketch template
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玉米是雌雄同株的植物顶生的垂花是雄花序侧生的穗是雌花序已知玉米中有两对独立遗传的基因可以改变玉米的性别即把雌雄同株转变为雌株或雄株当 sketch template
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玉米是单性花雄花位于顶部雌花在中下部叶腋体细胞中有10对同源染色体且具有多对相对性状常作为遗传学的研究对象之一I用玉米为实验 sketch template
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题目玉米是一种重要的粮食作物也是遗传研究的良好材料通常是雌雄同株顶生雄花序侧生雌花序如图所示一株由紫色玉米粒育成的植株A与 sketch template
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百度教育 sketch template
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Ⅰ一般说来细胞期中的分裂间期和分裂期相比持续时间短的时期是 动物细胞培养时如果缺氨基酸的供应细胞一般会停留在细胞期的 假定 sketch template
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如图是莱豆种子和玉米籽粒的纵剖面结构图请据图回答1具有保护作用的结构是66和．2菜豆种子种子萌时胚根胚根 sketch template
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如图为菜豆种子和玉米籽粒结构示意图据图回答问题1将图中数字填写在其所代表的结构后的横线上胚根 胚芽 胚轴 子叶 胚乳 种皮 种皮和 sketch template
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下图菜豆种子和玉米种子的结构图 1填序号胚芽 胚根 胚轴 子叶 种皮 胚乳 果皮和种皮 2菜豆种子的胚由图中 组成 sketch template
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种子与幼苗实验 sketch template
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全面了解玉米，本文足够了 1玉米基础知识 11玉米起源 （1）玉米又称玉蜀黍，属于禾本。玉米起源于美洲大陆，其祖先是野生植物——大刍草 sketch template
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为玉米种子萌提供营养及最先突破种皮的结构分别是如图中的 A．B．C．D． 题目和参考答案——青夏教育精英家教—— sketch template
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9．如图为菜豆种子和玉米种的结构图据图回答1填写图中各部分名称胚根胚轴胚芽子叶2菜豆种子和玉米种子结构的相同点是都有种皮 sketch template
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56．玉米是雌雄同株的植物雄花着生在植株顶端的雄穗上雌花着生在茎杆中部叶腋间的雌穗上在一个育种实验中采用AB两个品种的玉米进行如下图 sketch template
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玉米种子的胚胚乳种皮分别是由育而成的 A．受精卵受精极核珠被 B．受精极核受精卵子房壁 C．胚珠子房壁珠被 ——青夏教育 sketch template
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16．如图为“种子的结构示意图 分析回答问题1在图1所示玉米种子的剖面上滴一滴碘液变蓝的部分是2胚乳说明该结构成分主要含有淀粉 sketch template
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在观察玉米种子结构的实验中遇碘变蓝的部分是A．种皮B．胚C．子叶D．胚乳——青夏教育精英家教—— sketch template
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下列哪项不是生物的活动影响环境的实例 A木在秋天落叶B植物的蒸腾作用增加了空气的湿度C草履虫能净化污水D蚯蚓的活动改良了板结的 sketch template
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鼻腔能使吸入的空气变得湿润清洁和温暖与此功能无关的结构是A鼻粘膜能分泌粘液B鼻粘膜内有嗅细胞C鼻腔内有鼻毛D鼻腔粘膜内有丰富的毛细 sketch template
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芝麻 智汇三农 sketch template
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在学习完了植物各类群知识掌握了植物各类群的特征后你可以根据植物的特征对其进行学分类请你认真观察下图并阅读表解回答后面的问题探究 sketch template
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豌豆子叶的颜色有黄色和绿色黄色是显性其基因用A表示绿色是隐性其基因用a表示子叶黄色的基因组成是 A．aaB．AA或AaC．AaD sketch template
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13．大豆种子和玉米种子都有的结构是 A．胚和胚乳B．种皮和胚C．果皮和种皮D．果皮和胚乳——青夏教育精英家教—— sketch template
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纯种甜玉米与纯种非甜玉米间行种植所得玉米粒如下表所示据此分析回答 甜非甜甜玉米果穗上所结的玉米粒有有非甜玉米果穗上所结的玉米粒无有1在 sketch template
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如图是大豆种子的结构示意图请按要求回答1图中的名称是胚轴胚轴是种皮种皮．2标号的名称是胚芽胚芽它将来能育成植物体的茎和 sketch template
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图中表示菜豆种子和玉米种子萌过程仔细观察图你会现最先突破种皮的是A胚根B子叶C胚轴D胚芽——青夏教育精英家教—— sketch template
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31．玉米籽粒有甜和非甜两个品种种皮有黄色和白色之分植株有高茎和矮茎两种现将纯合的黄种皮甜玉米植株的花粉给纯合的白种皮非甜玉米植株授粉 sketch template