Why is the phylogenetic species concept criticized for delineating too many species?
A) The traits used are based on morphology, leading to fine distinctions between individuals and thus more species.
B) The traits used are solely based on DNA sequences, leading to fine distinctions between individuals, which leads to fine-grained species categories.
C) The traits used must be related to gene flow; this leads to fine-grained species categories.
D) The traits used do not have to be ecologically or physiologically significant, leading to fine-grained species categories.
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