what percentage of dna do humans share with reptiles

How Much DNA Do Humans and Reptiles Share?

It may surprise you to find out that humans and reptiles share a surprising amount of DNA in common. It’s estimated that humans and reptiles share somewhere between 50% and 70% of their DNA sequences. This means that even though reptiles and humans may look incredibly different on the outside, at the genetic level, we have a lot in common.

Research Findings

Studies have looked into this subject with the aim of understanding more about the differences and similarities between reptiles and humans. Here’s a summary of some of the key findings:

  • Humans and reptiles have similar genes: Humans and reptiles have a lot of the same genes, and many of these genes code for the same proteins. This means that many of the same processes are going on inside both humans and reptiles, but they may look different on the outside.
  • Humans and reptiles are in the same family: Humans and reptiles are both classified in the same family, called amniota. This means that even though we have evolved differently, we both share a common ancestor.
  • The percentages vary: The precise percentage of DNA that humans and reptiles share is probably between 50% and 70%, depending on the type of reptile and the amount of DNA being studied.

Why Do We Have Similar DNA?

So why does this similarity in DNA between humans and reptiles exist? The answer most likely lies in our shared ancestor. Reptiles and humans share a common ancestor, and it’s likely that the same genes in that ancestor were passed down to both species.

These genes have been modified over time to meet the different needs of reptiles and humans, but they still share the same basic structure. This means that, on a genetic level, humans and reptiles have much in common.


In conclusion, humans and reptiles share between 50% and 70% of their DNA sequences. This similarity is due to our shared ancestor and the passing down of the same genes over time. Despite our physical differences, humans and reptiles have a lot of the same processes going on inside our bodies.

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