That's an old definition of species because it crumbles under exactly the type of scrutiny you're trying to dismiss as a footnote. Now that we have genetic analysis as a metric, the only place the "fertile offspring" definition gets used is in high school biology.
BMN003 0 points 4 hours ago
That's an old definition of species because it crumbles under exactly the type of scrutiny you're trying to dismiss as a footnote. Now that we have genetic analysis as a metric, the only place the "fertile offspring" definition gets used is in high school biology.