Please note: this is the second time I'm posting this question because the first one I received a wrong answer. I would like a new workable code that solves the problem. Please use the tree defined in the code and write a function that solves the problem. Please don't copy the old code on Bartleby and send it to me. It doesn't work or solve the problem. I will upvote if you write a new workable code that solves the problem.   Please note: the goal is not to construct a tree but to calculate the posterior probabilities

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Please note: this is the second time I'm posting this question because the first one I received a wrong answer. I would like a new workable code that solves the problem. Please use the tree defined in the code and write a function that solves the problem. Please don't copy the old code on Bartleby and send it to me. It doesn't work or solve the problem. I will upvote if you write a new workable code that solves the problem.

 

Please note: the goal is not to construct a tree but to calculate the posterior probabilities 

Use the tree, observed states at the leaves, branch lengths and the JC69, calculate the posterior probability of [A,G,C,T] at node 15.
A
с
G
C
1
3
5
7
9
с
2
(12)
(11)
C
4
(10)
(13)
(14)
с
6
15
A
8
Transcribed Image Text:Use the tree, observed states at the leaves, branch lengths and the JC69, calculate the posterior probability of [A,G,C,T] at node 15. A с G C 1 3 5 7 9 с 2 (12) (11) C 4 (10) (13) (14) с 6 15 A 8
# Use this character state vector indicating
# the nucleotide at leaf nodes 1-8
sitel=["A","c","c","c","G","C","C","A"]
# Use this tree structure
tree4 {
"branch": 1.1}],
15: ['N', { "node": 14, "branch": 0.02}, {"node" : 8,
14: ['N', { "node": 13, "branch": 0.11}, {"node": 7, "branch": 1.2}],
13: ['N',{"node": 12, "branch": 0.12}, {"node": 6, "branch": 0.8}],
12: ['N',{"node": 11, "branch": 0.64}, {"node": 9, "branch": 0.11}],
11: ['N', { "node": 3, "branch": 0.26}, {"node": 10, "branch": 0.24}],
10: ['N', { "node": 4, "branch": 0.02}, {"node": 5, "branch": 0.08}],
9: ['N',{"node": 1, "branch": 0.4}, {"node": 2, "branch": 0.6}]
}
for i in range(1, 9):
tree4[i] = ['L']
#JC69 model to generate Q matrix
def JC69():
np. full ((4,4), 0.25)
np. fill_diagonal (0,-.75)
Q
Q/0.75
return Q
#Initialize rate matrix
JC69 ( )
# Answer
Transcribed Image Text:# Use this character state vector indicating # the nucleotide at leaf nodes 1-8 sitel=["A","c","c","c","G","C","C","A"] # Use this tree structure tree4 { "branch": 1.1}], 15: ['N', { "node": 14, "branch": 0.02}, {"node" : 8, 14: ['N', { "node": 13, "branch": 0.11}, {"node": 7, "branch": 1.2}], 13: ['N',{"node": 12, "branch": 0.12}, {"node": 6, "branch": 0.8}], 12: ['N',{"node": 11, "branch": 0.64}, {"node": 9, "branch": 0.11}], 11: ['N', { "node": 3, "branch": 0.26}, {"node": 10, "branch": 0.24}], 10: ['N', { "node": 4, "branch": 0.02}, {"node": 5, "branch": 0.08}], 9: ['N',{"node": 1, "branch": 0.4}, {"node": 2, "branch": 0.6}] } for i in range(1, 9): tree4[i] = ['L'] #JC69 model to generate Q matrix def JC69(): np. full ((4,4), 0.25) np. fill_diagonal (0,-.75) Q Q/0.75 return Q #Initialize rate matrix JC69 ( ) # Answer
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