| 1 | This ancestor was the result of a merging: one cell swallowed, imperfectly, another cell. | |
| 2 | One, he said, had been written by Abraham, the Jewish patriarch. | |
| 3 | How will it change our view of the origin of birds? | |
| 4 | The more research we do on more distant species of primates, the better window we have to their common ancestor. | |
| 5 | They have found that the placozoans are the closest living thing to the ancestor of all animals. |