Question

Why might it be more useful to classify Bacteria and Archaea based on their morphology rather than solely on their phylogeny?

Answer 1

The right answer is A.

There are different types of classifications of bacteria.

The classification of Linnaeus makes it possible to distinguish different levels: the reign, the branch, the family, the genus and the species. That we can associate with the phylogenetic classification.

Another classification, frequently used, corresponds to their reaction in contact with the Gram stain (morpho-tinctorial classification). It is a method to differentiate bacteria based on their staining capacity varying according to the composition of their wall. Thus, the bacteria colored in blue-violet will be said Gram-positive and those in pink Gram-negative.

Finally, they can be classified according to their need for oxygen to survive in aerobic bacteria or anaerobic bacteria.

Answer 2

Answer:
A. Both domains are capable of sharing segments of DNA with unrelated organisms which makes genetic classification difficult