Final answer:
To test the issue of gene-to-species tree, researchers can use a genome map viewer to compare gene sequences between different species.
Step-by-step explanation:
To test the issue of gene-to-species tree, researchers can use a genome map viewer to compare gene sequences between different species. One way to do this is by searching for a specific gene or phenotypic characteristic and examining the chromosome that encodes it in each species. By comparing the sequences of the same gene in different species, scientists can determine if they contain common DNA sequences.
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