Tag Info

New answers tagged

9

Mitochondria evolved before chloroplasts. We know this because Mitochondria form a monophyletic group: e.g. all life with mitochondria traces back to a single common ancestor (source). Since the group with chloroplasts groups within this clade, it must be the case that either (a) chloroplasts were obtained by an organism that already had mitochondria or (b) ...


4

According to my knowledge, this was the molecular and cellular evolutionary path of life. Synthesis of essential building blocks (fatty acids, aminoacids, cofactors...) Condensation of building blocks First RNA replicase; RNA genomes (differentiation between genomic and functional RNA, primitive metabolism) Ribosomes and first matrix dependent ...


5

I do not have a definitive answer but I can argue that mitochondria came into existence before chloroplasts despite the fact that, between their free living ancestors- $\alpha$-proteobacterium and Cyanobacteria, the latter seems to be older in evolution. I have following points to support this argument: The organisms that have chloroplasts also have ...


3

What is difference between plastid, chloroplast and mitochondira? Plastid is a general term for an organelle which consists of Chloroplasts, Chromoplasts, Leukoplasts/Amyloplasts and Apicoplasts. Chloroplasts (Chloro = green) are involved in photosynthesis; they express Chlorophylls and have the thylakoid structures which are involved in the electron ...



Top 50 recent answers are included