Which aspects of cell structure best reveal evolutionary unity? what are some examples of specialized mods?

1. The genetic material is a good evidence of evolution because it's been conserved through time but with some slight differences.

Another important aspect is the mitochondria. The mitochondria resulted from a symbiotic relationship between bacteria and pre-eukaryotes. Explaining why the mitochondria looks like a bacteria and has bacterial DNA.

2. specialized cellular modifications:

There are cellular modifications happening in multicellular organisms. That means, they have different types of cells, with different functions and will express different characteristics. For example:

- Nerve cells have dendrites which is important to receive the electrical signal from another neuron, other cells don't have that.

- Sperm cells have a tail (flagellum) in order to swim through the vagina and no other cell has that.