1.

The number of rooted trees (NR) for n taxa is ______

A. NR = (2n− 3)!/2ⁿ⁺² (n− 2)!
B. NR = (2n− 3)!/2ⁿ (n− 2)!
C. NR = (2n− 3)!/2ⁿ⁻² (n− 5)!
D. NR = (2n− 3)!/2ⁿ⁻² (n− 2)!
Answer» E.


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