Which type of evidence is least likely to result in changes to a phylogenetic tree?
dna sequencing
fossil record
discovery of new species
physical characteristics

physical characteristics

A phylogenetic tree is a diagram, which represent evolutionary relationship among the organisms. They are based on hypothesis not on well defined facts. The pattern of branching in a phylogenetic tree indicates how organisms are evolved from a series of common ancestors. To construct phylogenetic trees scientists often compare the characteristics which are common in species. These characteristics includes external morphology or physical structure, internal anatomy, biochemical metabolism, behavior, DNA and protein make up and characteristics found in fossils. Physical characteristics are define characteristics which allows organisms to classify them based on their shape and appearance. Therefore, physical characteristics is a type of evidence that is least likely to result in changes to a phylogenetic tree.

the scientific method.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )