Is amoeba a immortal micro-organism?

An amoeba replicates by splitting in half asexually so that each daughter cell is the same as the parent. Running this process backward from the present, each existing amoeba is the same as its predecessor (fungible) back as far in time as the first amoeba existed. In this regard the amoeba is immortal.

Now it get a bit picky.

The above assumes that no genetic changes have occurred since amoeba #1. This cannot be proved. Replication errors, chromosome damage by radiation etc may have happened to create slightly better or worse (at least different) amoebas that are the ancestors of all amoebas today.

The term "immortal" needs some thought to. No individual amoeba is necessarily immortal. Each amoeba can be killed. Only the amoeba pattern is immortal so far.

Then there is the Star Trek transporter problem. When Kirk is transported he is destroyed at the sending end and reconstituted at the receiving end. Is he the same Kirk? Amoebas are the same. The "mother" amoeba is essentially destroyed as it divides to create the daughters. Do the daughters share all the learnings of the mother? or would they see themselves as unique?
An amoeba replicates by splitting in half asexually so that each daughter cell is the same as the parent. Running this process backward from the present, each existing amoeba is the same as its predecessor (fungible) back as far in time as the first amoeba existed. In this regard the amoeba is immortal.

Now it get a bit picky.

The above assumes that no genetic changes have occurred since amoeba #1. This cannot be proved. Replication errors, chromosome damage by radiation etc may have happened to create slightly better or worse (at least different) amoebas that are the ancestors of all amoebas today.

The term "immortal" needs some thought to. No individual amoeba is necessarily immortal. Each amoeba can be killed. Only the amoeba pattern is immortal so far.

Then there is the Star Trek transporter problem. When Kirk is transported he is destroyed at the sending end and reconstituted at the receiving end. Is he the same Kirk? Amoebas are the same. The "mother" amoeba is essentially destroyed as it divides to create the daughters. Do the daughters share all the learnings of the mother? or would they see themselves as unique?