结构异染色质 meaning in Chinese

constitutive heterochromatin

The origin of such large amounts of constitutive heterochromatin and their role in karyotype evolution and speciation remain a mystery .
如此大量的结构异染色质的来源及其在染色体组型进化和物种形成中的任务仍是一个谜。
Therefore , the differences of the amount of the heterochromatin of in each species is high , and even the difference exists in the same species from different regions
但不是每个种都有端带和居间带。因此，各个种的结构异染色质含量差异较大，甚至同一个种不同地理种群间都有所不同。