Question

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

Explanation:

Phylogenetic trees represent evolutionary relationships. DNA sequencing (molecular data) often reveals precise genetic similarities/differences, leading to tree revisions. Fossil records provide direct ancestral evidence, and new species add data points that may adjust branching. Physical characteristics (morphology) can be misleading due to convergent evolution (similar traits from different origins) or incomplete sampling, making them less likely to drive major tree changes compared to molecular or fossil evidence.

Answer:

D. physical characteristics