26.3 hypothesis

Question 1

phylogenetic trees represent______on how the various organisms in the tree are related to one another

Answer 1

hypothesis

Question 2

a process that predicts features shared by two groups of closely related organisms are present in its common ancestors and all the descendants unless indicated otherwise is

Answer 2

phylogenetic bracketing

Question 3

example of phylogenetic bracketing

Answer 3

birds and crocodiles are the 2 LIVING closest relatives and they share

• brooding
• singing
• 4chambered hearts
• eggs

SO, scientists think that dinosaurs (the closest relative to birds) and their common ancestors all had the same traits