MO640 - Exercises - Phylogenetic trees: Parsimony, Felsenstein (2004) - chapter 1

Exercises marked with (*) require further reading/search beyond the suggested texts.

  1. Find ancestor states that yield the minimum number of changes in the topology below, based on the given matrix of spieces vs. characters.

    plylogeny ABCD
    C1 C2 C3
    A 0 1 1
    B 1 1 0
    C 1 0 0
    D 1 0 1

  2. Find a tree that minimizes the total number of changes for the matrix spieces vs. characters below.

    C1 C2 C3 C4 C5
    A 1 1 1 1 0
    B 1 0 0 0 1
    C 0 1 0 1 1

  3. Find a tree that minimizes the total number of changes for the matrix spieces vs. characters below.

    Dorsal nerve cord Legs Egg Development Hair Pouch Bidpedal posture
    Fish Y N Requires water In egg N N N
    Frog Y Y Requires water In egg N N N
    Turtle Y Y Shell In egg N N N
    Kangaroo Y Y Develops inside mother Marsupial Y Y Y
    Mouse Y Y Develops inside mother Placental Y N N
    Human Y Y Develops inside mother Placental Reduced N Y

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