The Biggest Debate In Biology

Biologists know how to edit an organisms DNA, but they still don't have a solid answer for this seemingly simple question.

The Species Problem has plagued biologists going back as far as Charles Darwin and Alfred Russel Wallace. It refers to a long standing disagreement between biologists over what the best definition for a species is. Most modern biology textbooks promote the biological species concept as the definition for what a species is.

But the biological species concepts doesn't apply to every organism. So if this definition is wrong, then what is a species? Do species actually exist? What if species dont exist, what if species aren't real? How do we classify organisms of we don't even have a solid species definition??
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Sources:
https://academic.oup.com/sysbio/article/56/6/879/1653163
https://www.pnas.org/content/102/suppl_1/6600
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https://www.goodreads.com/book/show/503051.The_Diversity_of_Life
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Видео The Biggest Debate In Biology канала 21st Century Nature