If two species are branching off of the same node in a phylogeny, is it possible to tell which species evolved first?

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

2polnis which of the following is an advantage of an in vitro experiment?me

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?