Lateral gene transfer is one plausible explanation as to why organisms in Archaea,Bacteria,and Eukarya still share so many genes among such distinct domains.

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Lateral gene transfer, which involves the transfer of genetic material between organisms that are not parent and offspring, can explain why organisms in different domains may still share certain genes. This process can result in the acquisition of new traits or functions, which can contribute to the diversity and adaptability of these organisms.

Lateral Gene Transfer Is One Plausible Explanation as to Why