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某种鼠中皮毛黄色为显性短尾为显性．基因a或b纯合会导致个体在胚胎期死亡．两对基因位于常染色体上相互间独立遗传．现有一对表现型均为黄色短尾 Template






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sketch 5167
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sketch 2744 Burce Lee by Karim Tayyeby
sketch 5138 Monster by Leonie Cooper
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sketch 5040 Amy Winehouse by Timothy Palfreyman
sketch 4300 República, comunismo, libertad

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tomski某种鼠中皮毛黄色为显性短尾为显性．基因a或b纯合会导致个体在胚胎期死亡．两对基因位于常染色体上相互间独立遗传．现有一对表现型均为黄色短尾 coloring
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某种鼠的黄色与鼠色是一对相对性状由一对等位基因Aa控制正常尾与卷尾是一对相对性状由一对等位基因Tt控制黄色卷尾鼠彼此杂交得 sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因是自由组合的现有两只 sketch template
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某种鼠中皮毛黄色为显性短尾为显性基因A或b纯合会导致个体在胚胎期死亡两对基因位于常染色体上相互间独立遗传现有一对表现型均为黄色短尾 sketch template
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某种鼠中皮毛黄色为显性短尾为显性基因A或b纯合会导致个体在胚胎期死亡两对基因位于常染色体上相互间独立遗传现有一对表现型均为黄色短尾 sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因是自由组合的现有两只 sketch template
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小鼠体色由位于常染色体上两对基因决定A基因决定黄色R基因决定色AR同时存在则皮毛灰色无AR则白色一灰色雄鼠和一黄色雌鼠交配 sketch template
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某种鼠的皮毛黄色是显性短尾是显性这两对基因位于常染色体上且两对基因独立遗传若基因A或T在纯合时都能使胚胎致死请分析冋答下列问题1 sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因是自由组合的现有两只 sketch template
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某种品系的鼠毛色灰色和黄色是一对相对性状学家进行了大量的杂交实验得到了如下结果由此推断不正确的是杂交亲本后代杂交A灰色×灰色灰色杂交B sketch template
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老鼠皮毛黄色为显性某遗传学家在实验中现含显性基因的卵细胞不能结合如果杂合的黄鼠与杂合的黄鼠交配得到第二代后代相同基因型老鼠继续交配得到 sketch template
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某种鼠中黄鼠基因A对灰鼠基因a为显性短尾基因B对长尾基因b为显性．且基因A或B在纯合时胚胎致死这两对基因分别位于不同对同源染色体上．现有 sketch template
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某种鼠中皮毛黄色为显性短尾为显性基因A或b纯合会导致个体在胚胎期死亡两对基因位于常染色体上相互间独立遗传现有一对表现型均为黄色短尾 sketch template
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某种鼠中皮毛黄色为显性短尾为显性．基因A或b纯合会导致个体在胚胎期死亡．两对基因位于常染色体上相互间独立遗传．现有一对表现型均为黄色短尾 sketch template
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某种鼠中黄鼠基因A对灰鼠基因a为显性短尾基因B对长尾基因b为显性且基因A或b在纯合时使胚胎致死这两对基因是独立遗传的现有两只双杂合的 sketch template
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某种鼠中皮毛黄色为显性短尾为显性基因A或b纯合会导致个体在胚胎期死亡两对基因位于常染色体上相互间独立遗传现有一对表现型均为黄色短尾 sketch template
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请根据不同鼠种毛色性状遗传研究的结果分析回答下列问题．1甲种鼠的一个自然种群中体色有褐色和色两种由一对等位基因控制．已知褐色为显性 sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因是自由组合的现有两只 sketch template
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小鼠的体色有黄色和色两种尾有正常尾和弯曲尾两种其中一种为伴X染色体遗传．用黄色正常尾雌鼠与黄色弯曲尾雄鼠杂交F1的表现型及比例为黄色 sketch template
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题目如图是某研小组用显微注射法获得转基因超级鼠的实验过程示意图基本过程是往核未融合的受精卵内注射了大鼠的生长激素基因结果是转基因超基 sketch template
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某种鼠中黄鼠基因A对灰鼠基因a显性短尾基因B对长尾基因b显性且基因A或b在纯合时使胚胎致死这两对基因位于非同源染色体上现有两只双杂合 sketch template
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题目斯氏鼠种类众多是遗传学研究的常用材料下图是某种斯氏鼠2N＝44的一些基因在染色体上的排列情况该种成年鼠的尾长受三对等位基因A sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因是自由组合的现有两只 sketch template
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题目某种鼠中黄鼠基因A对灰鼠基因a为显性短尾基因B对长尾基因b为显性且基因A或B在纯合时使胚胎致死这两对基因是独立遗传的现有两只 sketch template
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某种鼠中黄鼠基因Y对灰鼠基因y为显性短尾基因T对长尾基因t为显性．且基因Y或t纯合时都能使胚胎致死这两对基因是独立遗传的现有两只双杂合 sketch template
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题目某种小鼠的体毛有色和白色受一对基因Aa控制两只毛小鼠杂交后代性状表现如图一分析回答1小鼠的毛和白毛是一对 性状 sketch template
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某种鼠中黄鼠基因Y对灰鼠基因y为显性短尾基因T对长尾基因t为显性且基因Y或t纯合时都能使胚胎致死这两对基因是独立遗传的现有两只双杂合 sketch template
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题目为了探究“温度湿度光照 三种因素对鼠妇分布的影响某生物兴趣小组进行了相关实验请根据图1和图2回答有关问题1图一为兴趣小组 sketch template
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某种鼠群中黄鼠基因A对灰鼠基因a为显性短尾基因B对长尾基因b为显性且基因A或b在纯合时使胚胎致死这两对基因是独立遗传的现有两只双杂合 sketch template
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某种鼠中黄鼠基因A对灰鼠基因a显性短尾基因B对长尾基因b显性且基因A或b在纯合时使胚胎致死这两对基因位于非同源染色体上现有两只双杂合 sketch template
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如图是特定条件下自由组合定律的几种情况请据信息回答1在某种鼠中已知黄色基因Y对灰色基因y是显性短尾基因T对长尾基因t是显性而且 sketch template
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某种鼠中黄鼠基因A对灰鼠基因a显性短尾基因B对长尾基因b显性且基因A或b在纯合时使胚胎致死这两对基因位于非同源染色体上现有两只双杂合 sketch template
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3．一只雌鼠的一条染色体上某基因生了突变使野生型变为突变型．让该雌鼠与野生型雄鼠杂交的雌雄鼠中均有野生型和突变型．由此可以推断该雌鼠的 sketch template
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某种鼠中毛的黄色基因Y对灰色基因y为显性短尾基因T对长尾基因t为显性且基因Y或T在纯合时都能使胚胎致死这两对基因位于不同的常染色体上 sketch template
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图表示某生物b基因正常转录过程中的局部图解图表示该生物正常个体的体细胞部分基因和染色体的关系该生物的色素产生需要如图所示的3类基因 sketch template
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图一是某种动物细胞分裂过程中部分染色体行为示意图三个细胞均来自同一个体图二是该动物某种细胞分裂过程中染色体数目变化的数学模型据图分析下列 sketch template