If a gene's sequence is compared among several different vertebrates and they are found to be 95% homologous,one can assume that the genes are derived from the same ancestral gene.

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If the gene sequences have a high level of homology among different species, it suggests that they share a common ancestor. This is one of the key principles of molecular evolution and phylogenetics. Therefore, if the sequences are found to be 95% homologous, it is reasonable to assume that they are derived from the same ancestral gene. However, it is important to note that homology does not always imply function, and there may be variations in gene expression, regulation, and function even among homologous genes.

If a Gene's Sequence Is Compared Among Several Different Vertebrates