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- What can skeletal anatomy and DNA sequences in existing primates tell us about the study of human evolution?How can we understand the evolutionary relationships among animals, and how, in turn,can we understand the biological traits that have given rise to such great diversity on a few branches of the animal tree of life?What makes Archeopteryx an important fossil evolutionarily? This species has a mix of characters that suggest it was a "transitional" species between two large groups, dinosaurs and birds. This species is the oldest known, universally agreed upon, fossil of life, and therefore tells up what the common ancestor to all living things might have been like. This species is thought to be the last common ancestor between chimps and humans, and therefore is the root of our own specific group (homonins). This species has a mix of characters that suggests is was a "transitional" species between two large groups, fish and amphibians.
- What characteristics do primates and rodents have in common? Which group of animals are birds more closely related to? Reptiles or Rodents? What do amphibians,reptiles,birds,rodents and primates have in common? What characteristics is unique only to birds and reptiles? Fish and primates have a common ancestor. What characteristics does this ancestor have?Elaine Morgan makes the case that humans may have an aquatic ancestor in recent evolutionary past. What are the evidence that are needed to support the aquatic ape hypothesis?Which major groupings of animals defined on the basis of morphological characters have been confirmed by molecular sequence studies?
- What are three traits (besides a post-orbital bar) that are DERIVED traits when COMPARING primates to non-primates, but are ANCESTRAL traits WITHIN the primates?How does developmental biology provide evidence of a common ancestry for vertebrates as diverse as reptiles, birds, pigs, and humans?Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply. A) The mammals are the outgroup in this tree. B) Birds and dinosaurs share a recent common ancestor. C) Mammals and birds are more closely related than any other species. D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles. E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.
- What role do the fossils named “Ardi” and “Lucy” play in the reconstruction of human evolutionary history?We have studied how the six major primate groups evolved, with the most recent group being the hominins.The hominins branched off from main ape group around 7 million years ago.According to our lessons explain your reasoning as to whether there is a missing link,or one single specimen that embodies both ape and hominin traits, that serves as a transition between what is clearly ape and what is clearly hominin?What have you found most interesting about the beginning of hominin evolution and why?How, specifically, is the concept of ALLOMETRY relevant to the phylogenetic position of Homo floresiensis? Because if allometry explains the anatomy of Homo floresiensis then we can conclude that it is not separate species but instead a member of our species. Although most mammals on islands go through a process of getting smaller, Homo floresiensis evolved from a smaller ancestor to be bigger, meaning that allometry is an important factor. Mutations in the allometry allele are associated with many of the characteristics of Homo floresiensis. Because Homo floresiensis is so much smaller than other members of the genus Homo, it is important to determine how shape changes associated with smaller size impacted the species. Because Homo floresiensis had both small- and large-bodied forms, variation within the species is in large part dictated by allometry.