8) you are studying a group of chameleons that are currently present across many southern hemisphere landmasses. species 1 is found in australia, species 2 in madagascar, species 3 in south america, species 4 in new zealand, species 5 in africa, and species 6 in new guinea. you hypothesize that the current species distribution is due to an ancestral chameleon that inhabited gondwana and was speciated as the continent broke up. draw a phylogeny that is consistent with this hypothesis. (assume that this is the order of breakup: madagascar – 160 mya, africa – 100 mya, new zealand – 85 mya, australia and new guinea 60 mya, and finally south america and antarctica split 35mya). it turns out that most of the distribution is due to vicariance, but species 2 (madagascar) dispersed from africa, and species 4 (new zealand) dispersed from australia after the australia and new guinea lineages split. draw a phylogeny consistent with this hypothesis.