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单词 homoplasmy
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homoplasmy

英汉-汉英词典
n. 同型异源性
词组 | 习惯用语
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  • protoplasm n. 原生质 adj. 原生质的
  • neoplasm n. 赘生物,瘤;新生物
  • cytoplasm n. 细胞质
  • homogamy n. 雌雄同熟;同子生殖
homoplasmy 同型异源性
英语百科

Homoplasmy

The cell in the top left is heteroplasmic as shown by the normal mitocondria in purple and the mitochondria with a mtDNA mutation in red. As this cell divides, the mitochondria replicate and independently assort into the daughter cells. This leads to both positive and negative (cell shown in red) homoplasmy.

Homoplasmy is a term used in genetics to describe a eukaryotic cell whose copies of mitochondrial DNA are all identical. When in normal and healthy tissues, all cells are homoplasmic. Homoplasmic mitochondrial DNA copies may be normal or mutated; however, most mutations are heteroplasmic (only occurring in some copies of mitochondrial DNA). It has been discovered, though, that homoplasmic mitochondrial DNA mutations may be found in human tumors.

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更新时间:2025/6/18 16:05:20