Question

Entamoebae Eukarya Animals Slime molds Fungi Archaea Green Bacteria nonsulfur bacteria Gram- positive Proteobacteria bacteria (Purple bacteria) Thermoproteus Cyanobacteria Pyrodictium Flavobacteria Methanosarcina Methanobacterium Methanococcus Thermococcus Plants Ciliates Halophiles Flagellates Trichomonads Thermotogales Microsporidia Diplomonads Last universal common ancestor

A) What is the diagram above? B) Describe what it illustrates about the relationship between animals, halophiles, slime molds, and gram-positive bacteria. C) Explain the evidence used in construction of this diagram.

Answer 1

A. The diagram above represents phylogenetic tree.

B . The diagram shows the three kingdom system -Eubacteria ,Archea and Eukarya . It shows that organism with prokaryotic cellular organisation present in more than one kingdom .

The relationship between animals, halophiles, slime molds, and gram-positive bacteriais that they are photosynthetic and non photosynthetic organisms . Eukarya share mechanisms of cell division and protein synthesis .

C. An american biologist in 1980's gave this idea whose name was carl woese . He studied and found that rRNA sequence of both bacteria and other prokaryotes are different and hence placed archaebacteria into a separate category and upon the sequencing of genomes he found both the prokaryotes and eukaryotes kingdoms were found to be artificially construct . Organism with prokaryotic construct lies in more than one kingdom.