Repetitive DNA sequences have been related to the maintenance of heterochromatin, evolution, and speciation, mainly due to the variations to which they are subject. Bees of the Meliponini tribe generally possess large amounts of heterochromatin that occupy the long arm of the chromosomes or even almost the entire chromosome. Although widely studied by conventional methods, little is known about the composition of these regions. Thus, this study aimed to analyze a repetitive sequence of Tetragonisca angustula and compare it with other genera in order to broaden the understanding of the evolution of these sequences. The results indicate that the isolated repeating DNA sequence of Tetragonisca angustula is present in the heterochromatin of all chromosomes of this species and in Tetragonisca fiebrigi . However, the same was not observed for the other evaluated species, which suggests that the isolated sequence is conserved within the genus Tetragonisca and that, in the other genera, the sequences that compose the heterochromatin may have undergone different processes of diversification or have arisen independently.

中文翻译：

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不同的重复 DNA 序列组成了 Meliponini 中的异染色质

重复的 DNA 序列与异染色质的维持、进化和物种形成有关，主要是由于它们所受的变异。Meliponini 部落的蜜蜂通常拥有大量的异染色质，这些异染色质占据了染色体的长臂甚至几乎整个染色体。尽管通过传统方法进行了广泛研究，但对这些区域的组成知之甚少。因此，本研究旨在分析 Tetragonisca angustula 的一个重复序列并将其与其他属进行比较，以拓宽对这些序列进化的理解。结果表明，Tetragonisca angustula 的分离重复 DNA 序列存在于该物种所有染色体的异染色质和 Tetragonisca fiebrigi 中。然而，