Using the Clues Given Below, Generate a Phylogeny That Shows

Essay

Using the clues given below, generate a phylogeny that shows the relationships among reptiles, prototherians, marsupials, and eutherians.Label the following characteristics (A-D) on the phylogeny:
A.Ventral pouch
B.Hair and mammary glands
C.Amniote egg
D.Highly developed placenta
Clues:
Prototherians, marsupials, and eutherians have hair and mammary glands.
Marsupials have a ventral pouch and placenta.
Eutherians have a placenta.
Marsupials were once found on all continents but are now restricted to Australasia and the Americas.
Reptiles, prototherians, marsupials, and eutherians are amniotes.
Prototherians lay shelled eggs.
Prototherians are only found in Australia and New Guinea.