bis 2C

Plant tree

What happened on the branch leading to eukaryotes?

Formation of Nucleus and invention of many eukaryotic traits. Cytoskeleton, phagocytosis, diverse organelles, mitosis, sexual reproduction, linear chromosomes, chromosomes packaged into chromatin

Branch from proteobacteria to eukaryotes

Endosymbiosis with a proteobacterium that became the mitochondrion; primary endosymbiosis.

Branch from cyanobacteria to plantae

Endosymbiosis with a cyanobacterium that became the chloroplast; primary endosymbiosis

How many genomes were present in LECA?

1 genome

How many genomes were present after LECA engulfed mitochondria (proteobacterium)?

2 genomes

How many genomes were present after the common ancestor of plantae engulfed the cyanobacterium?

3 genomes

Is the presence of DNA significant evidence that the mitochondria evolved from proteobacteria?

False, prokaryotic archaea have DNA genomes too and some look a lot like mitochondria

How eukaryotes not in Plantae got chloroplasts

Symbiosis in the plantae ancestor and then secondary symbiosis in the other lineages