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This sentencs says it all:
"... Although lack of reciprocal monophyly is an expected consequence of very recent divergence, if those taxa have been isolated for any length of time, haplotypes should not be shared across species..."
"... Although lack of reciprocal monophyly is an expected consequence of very recent divergence, if those taxa have been isolated for any length of time, haplotypes should not be shared across species..."