Why Do We Have Fingernails and Not Claws? #AskDNews
Nails evolved from claws roughly 50 million years ago. Why did this happen and what purpose do nails serve? Why Do Fingernails Grow Faster Than Toenails?
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You scratch my back, I scratch yours… because that’s why we have nails, right? Hi guys, Lissette here on Dnews. So, we get a lot of questions from you on Facebook, on YouTube, on Twitter. One that got us scratching our heads was Cynthia Gutierrez’s Why Do We Have Nails? Well… The truth is scientists don’t really know how our fingers came to have flat, thin covers made of keratin on them. All we can say for certain is that we have fingernails because our primate ancestors had them and they were passed along to us. For some time, scientists theorized that our nails were simply vestiges of ancestral claws, but the scientific explanation has gotten a lot messier and more complicated that. Part of the reason it’s complicated is because nails evolved more than 50 million years ago. Like mo...
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You scratch my back, I scratch yours… because that’s why we have nails, right? Hi guys, Lissette here on Dnews. So, we get a lot of questions from you on Facebook, on YouTube, on Twitter. One that got us scratching our heads was Cynthia Gutierrez’s Why Do We Have Nails? Well… The truth is scientists don’t really know how our fingers came to have flat, thin covers made of keratin on them. All we can say for certain is that we have fingernails because our primate ancestors had them and they were passed along to us. For some time, scientists theorized that our nails were simply vestiges of ancestral claws, but the scientific explanation has gotten a lot messier and more complicated that. Part of the reason it’s complicated is because nails evolved more than 50 million years ago. Like mo...
