What are stromatolites and the evidence supporting the endosymbiotic theory?
Understand the Problem
The question appears to be focused on concepts related to early life forms and geological time, likely asking for information or clarification on these topics.
Answer
Stromatolites are ancient cyanobacteria rocks; the endosymbiotic theory is supported by similarities in enzymes, DNA, and ribosomes between prokaryotes and organelles.
Stromatolites are layered rock structures formed by ancient cyanobacteria, serving as the first fossil evidence of life. Evidence for the endosymbiotic theory includes similarities in enzymes, DNA, and ribosomal structures between prokaryotes and organelles like mitochondria and chloroplasts.
Answer for screen readers
Stromatolites are layered rock structures formed by ancient cyanobacteria, serving as the first fossil evidence of life. Evidence for the endosymbiotic theory includes similarities in enzymes, DNA, and ribosomal structures between prokaryotes and organelles like mitochondria and chloroplasts.
More Information
Stromatolites represent some of the oldest evidence for life on Earth, often associated with the activity of ancient cyanobacteria. The endosymbiotic theory explains the origin of key organelles in eukaryotes, supported by structural and genetic similarities to prokaryotes.
Tips
It's common to overlook the genetic evidence when discussing the endosymbiotic theory. Be sure to consider genome sequence similarities.
Sources
- Understanding Evolution: Evidence for endosymbiosis - evolution.berkeley.edu
- About Stromatolites - Fossil Mall - fossilmall.com
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