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marissaimuniz
29.09.2021 •
Mathematics
3. A student stated: negative - positive will always equal a negative number. Explain why this is true or alse and provide an example to support your answer.
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Ответ:
Both species are mammals and therefore they share genome regions and gene families that are conserved in the course of evolution.
Explanation:
Synteny enables to identify conserved genome regions between species by aligning their DNA sequences. For example, the human and chimpanzee genomes share about 95-98% of synteny (sequence similarity) in their DNA sequences. In this case, a whole-genome sequence similarity of 80 % is evidence that both species are relatively closely related and share a near common ancestor. Indeed, it is expected that the most part of the remaining 20% represents mutations associated with the fixation of neutral alleles (i.e., neutral mutations) and therefore have no evolutionary meaning.