BME 6762
View the step-by-step solution to:

Using the UPGMA concept, construct an evolutionary tree for the data on pairwise species differences indicated in the following table:

Using the UPGMA concept, construct an evolutionary tree for the data on pairwise species differences indicated in the following table:

OUT A B C D E

A 0 5 30 45 35

B 0 28 42 32

C 0 10 15

D 0 20

E 0

Step 1 :

OUT A-B C D E

A-B 0 29 43.5 33.5

C 0 10 15

D 0 20

E 0

ED between {A, B} and C = ½ × [ED(A and C) + ED(B and C)] = ½ × [30 + 28] = 29

ED between {A, B} and D = ½ × [ED(A and D) + ED(B and D)] = 43.5

ED between {A, B} and E = ½ × [ED(A and E) + ED(B and E)] = 33.5

Step 2 :

OUT A-B C-D E

A-B ? ?

C-D ? ?

E ? ?

Step 3 :

OUT A-B C-D-E

A-B ? ?

C-D-E ? ?

ED between {C-D, E} and A-B = ?

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