Ancestor-descendent relationships

MAGarland at AOL.COM MAGarland at AOL.COM
Wed Feb 16 11:04:08 CST 2000

TDibenedetto writes:

> Ancestry is a very specific type of relationship; far more specific
>  than sister-group relationship. .... But a claim of ancestry would entail
>  the assertion that one species was transformed into another. There is no
>  pattern in character distributions which can distinguish this type of
>  relationship from more general sister-group relationships. So we can
>  speculate about ancestry, and we can find evidence to disprove a claim of
>  ancestry, but there is no type of evidence to indicate such a relationship.

It's interesting that you can determine ancestor-descendent relationships of
*characters.*  So why not lineages?


Mark A. Garland
Florida Department of Environmental Protection
2600 Blair Stone Road, Mail Station 2500
Tallahassee, Florida 32399
mark.garland at
magarland at

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