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Homework Help: Evolution-Natural selection types

  1. Jun 17, 2007 #1
    1. The problem statement, all variables and given/known data

    Identify the type of natural selection (distruptive, stabilizing, directional, sexual, runaway or cummullative) operating in these examples:

    a) The diversity among honey creepers

    b) Peacock’s tail

    c) Central nervous system

    d) Egg size in robins

    e) Body size in blue whale

    f) Courtship dance of blue-footed booby

    2. Relevant equations

    I read about all the different types of selection.

    3. The attempt at a solution

    These are the solutions I came up with, but i really don't understand some of them.

    a) The diversity among honey creepers is a disruptive selection. ----not sure at all about this one

    b) Peacock’s tail is sexual runaway selection.

    c) Central nervous system is cumulative

    d) Egg size in robins is ----not sure at all about this one

    e) Body size of whale is directional selection.

    f) Courtship dance shows sexual selection

    If someone can check for me and tell me as soon as possible it will be really appreciated.

  2. jcsd
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