Somatic mutation, a main biological phenomenon of citrus and other fruits, is often used for breeding as a major variation source. Spontaneous mutations often occur in citrus.
体细胞突变是柑橘等果树比较常见的生物学现象，也是品种选育，即芽变选种的主要变异来源。
In humans, mutation of the gene for Kv1.1 has been associated with spontaneous seizures, abnormal muscle movements, and motor coordination problems.
在人体中，Kv 1.1对应的基因突变与自发性疾病发作，异常肌肉运作，和肌肉协调问题有关。
Hemophilia is caused by a mutation—likely spontaneous in Victoria‘s case—on the X chromosome and can be passed along the maternal line of families.
血友病源于X染色体上的一种突变——很可能是维多利亚女皇自身发生的一种突变，可经由遗传系统传给家族后代。
Hemophilia is caused by a mutation—likely spontaneous in Victoria‘s case—on the X chromosome and can be passed along the maternal line of families.
血友病源于X染色体上的一种突变——很可能是维多利亚女皇自身发生的一种突变，可经由遗传系统传给家族后代。
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