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Unformatted text preview: which are which, and 2) deciding whether (or how) to perform character weighting . Excluding characters is an extreme form of weighting (weight = 0). Placentals have a placenta, marsupials a pouch where the immature young finish their development. These are major characters, should they carry more weight in our assignment of relationship. If we looked for other characters in the animals we could probably find many that would link the dog-dog, squirrel-squirrel, cat-cat, anteater-anteater, etc. Since characters are the data we will use to do systematics other questions arise: 1) should we use single or many characters?, 2) what are legitimate characters (morphology, ecology, etc.)? 3) how do we weight those that are chosen?...
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This note was uploaded on 11/06/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10