how is A phylogenetic tree is arranged

Answer 1

A phylogenetic tree is typically arranged with the most closely related organisms grouped together and branching out from a common ancestor. The branches represent the evolutionary relationships between different species, with those that are more closely related sharing a more recent common ancestor. The branching points, or nodes, on the tree represent the divergence of one species from another and can indicate when certain lineages evolved or went extinct. The arrangement of the tree is based on molecular, morphological, or behavioral similarities and can be inferred using various methods such as DNA sequencing, anatomical comparisons, and fossil evidence.