The direct answer is that humans do not share a quantifiable percentage of DNA with dinosaurs, primarily because dinosaurs are a distinct group that existed millions of years ago and are not direct ancestors of modern birds or mammals. However, all living organisms, including humans and dinosaurs, share a common ancestry if we go back far enough in evolutionary terms.
In a broader sense, it’s estimated that humans share around 60% of their DNA with chimpanzees, our closest living relatives. In terms of distant relatives, it’s thought that humans share about 10% of their DNA with more ancient reptiles and birds, including birds that are considered modern-day descendants of dinosaurs.
This shared genetic material isn’t directly from dinosaurs but reflects the gradual changes that occurred through millions of years of evolution. It’s amazing to think about how interconnected all life on Earth is, stemming from common ancestral roots, even if the percentages cannot be specifically defined in terms of direct DNA comparison with dinosaurs.