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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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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
view template
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
view template
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
view template
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
view template
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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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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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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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在小鼠的一个自然种群中体色有黄色尾巴有短尾两对相对性状的遗传符合基因的自由组合定律．任取一对黄色短尾个体经多次交配F1的表现型 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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题目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 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
view template
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
view template
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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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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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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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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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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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老鼠皮毛颜色受两对独立遗传的等位基因Bb和Dd控制B为色皮毛基因b为棕色皮毛基因当基因d纯合时制毛色基因的表达小鼠皮毛颜色表现 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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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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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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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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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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两对基因是独立遗传．当基因A或b在纯合时使胚胎致死．现有两只基因型为 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研究小组对田鼠的毛色遗传做了如下研究亲代及子代情况如下表回答下列问题组别亲代子代表现型及数目雌性雄性一黄色色色二色黄色 sketch template