The DNA and protein sequences of the α-tubulin genes in humans and in fish are similar,and because each arose due to speciation,these genes would be considered:

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The fact that the α-tubulin genes in humans and fish arose due to speciation means that they are orthologous, as they are homologous genes present in different species that diverged from a common ancestor. Paralogous genes arise due to gene duplication events within a single species, and autologous genes refer to genes within the same individual or organism.

The DNA and Protein Sequences of the α-Tubulin Genes in Humans