What is the common ancestor of letters A, B, C, D and E?

What is the common ancestor of C and D?

Based on the sequences given, which is the most related to the bacteria X?

Bacteria X: GGC ACG TTA ATT GGC

bacteria A: GGC ATT CCG ATT GGC

bacteria B : GTC ACG TCC AGG CCA

bacteria C: GGC TCG TTA ATT GGC

bacteria D: GGC ACG TTA ATT TTA

Microorganisms do not generally reproduce sexually, therefore species are usually defined by phenotypic and genotypic characterisation

In an approach called _______ taxonomy, relatedness is determined by a wide range of phenotypic and genotypic information

Which of the following is NOT a characteristic of the phylum Proteobacteria?

E. coli belongs to which class of phylum Proteobacteria?

Which bacterial phylum belongs to 'low G+C Gram positive' bacteria?

Photosynthetic, nitrogen fixing, similar to chloroplasts. Which phylum belongs to these characteristics?

Usually Gram-positive, high GC, make antibiotics. These characteristics refer to which phylum?

Gram-negative, spiral shaped, flagellated. These characteristics belong to which phylum?

Members of the phylum ________________, formerly known as the green nonsulphur bacteria, have primarily been associated with extreme habitats such as hot springs, and hypersaline environments where they are known as (filamentous) anoxygenic photothophs

Which of the following method can best reveal the evolutionary phylogenetic relationship?

Which is the correct order of making phylogenetic tree?