How do people with an evolutionary worldview support the idea that endosymbiosis is real?

Endosymbiosis is important because it is a theory that explains the origin of chloroplast and mitochondria. It is also a theory that explains how eukaryotic cells came to be.

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint