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Many biologists will talk about the group known as Ungulates, or hoofed mammals. This group
includes species as diverse as pigs (Sus), elk (Cervus), cows (Bos), hippos (Hippopotamus),
extinct species (e.g., Elomeryx and Archaeotherium), and even rhinos and horses (Equus). Based
upon the tree above and assuming this tree is correct, is this group (Ungulates) monophyletic?A.
Yes, because all of these species share the synapomorphy of hooves
Solution
b. Yes, because all of these species share a most recent common ancestor
All the members of the group of interest are more closely related to each other than they are to
the outgroup. Hence, the outgroup stems from the base of the tree. An outgroup can give you a
sense of where on the bigger tree of life the main group of organisms falls. It is also useful when
constructing evolutionary trees.
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Many biologists will talk about the group known as Ungulates, or hoo.pdf

  • 1. Many biologists will talk about the group known as Ungulates, or hoofed mammals. This group includes species as diverse as pigs (Sus), elk (Cervus), cows (Bos), hippos (Hippopotamus), extinct species (e.g., Elomeryx and Archaeotherium), and even rhinos and horses (Equus). Based upon the tree above and assuming this tree is correct, is this group (Ungulates) monophyletic?A. Yes, because all of these species share the synapomorphy of hooves Solution b. Yes, because all of these species share a most recent common ancestor All the members of the group of interest are more closely related to each other than they are to the outgroup. Hence, the outgroup stems from the base of the tree. An outgroup can give you a sense of where on the bigger tree of life the main group of organisms falls. It is also useful when constructing evolutionary trees.