dna xy 型
Put simply polymorphism is when there are two or more possibilities of a trait on a. To be classified as such morphs must occupy the same habitat at the same time and belong to a panmictic population one with random mating.
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Dna xy 型. In biology polymorphism is the occurrence of two or more clearly different morphs or forms also referred to as alternative phenotypes in the population of a species.
猫是xy型 性别决定的二倍体生物 当猫细胞中存在两条或两条以上的x染色体时 只有一条x染色体上的基因能表达 其余x染色体高度螺旋化失活成为巴氏 高中三年级 生物试题 减数分裂考点 性染色体与性别遗传考点 遗传信息的转录考点 好技网


























































