When compatible Hydractinia symbiolongicarpus colonies recognize each other as “self,” via Alr genes, they fuse together. (IMAGE)

University of Pittsburgh

When compatible Hydractinia symbiolongicarpus colonies recognize each other as “self,” via Alr genes, they fuse together.

Caption

When compatible Hydractinia symbiolongicarpus colonies recognize each other as “self,” via Alr genes, they fuse together.

Credit

Huene, A. L. et al., PNAS, 2022

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