This is the 3rd time I am asking this question. Previous answers were wrong or incomplete. Please, do not copy old answers for me. I will upvote if you provide a workable code. Here is the code and tree I have already provided if it's helpful. Please use the tree: tree = {     9: ['N',{'node': 6, 'branch': 0.1}, {'node': 8, 'branch': 0.5}],     8: ['N',{'node': 3, 'branch': 0.75}, {'node': 7, 'branch': 0.1}],     7: ['N',{'node': 4, 'branch': 0.1}, {'node': 5, 'branch': 0.15}],     6: ['N',{'node': 1, 'branch': 0.5}, {'node': 2, 'branch': 0.25}],     5: ['L'],     4: ['L'],     3: ['L'],     2: ['L'],     1: ['L'] } # Write code to solve problem here: # Open the file and read the contents with open('SSA_regions.fasta', 'r') as f:     file_contents = f.read() # Split the contents by sequence sequences = file_contents.split('>') # Initialize an empty dictionary to store the sequences sequence_dict = {} # Loop over the sequences for sequence in sequences[1:]:     # Split the sequence into header and nucleotide sequence     header, nucleotides = sequence.split('\n', 1)          # Remove any whitespace from the nucleotide sequence     nucleotides = nucleotides.replace('\n', '')          # Add the nucleotide sequence to the dictionary     sequence_dict[header] = nucleotides # Print the dictionary print(sequence_dict)

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
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This is the 3rd time I am asking this question. Previous answers were wrong or incomplete. Please, do not copy old answers for me. I will upvote if you provide a workable code. Here is the code and tree I have already provided if it's helpful. Please use the tree:

tree = {
    9: ['N',{'node': 6, 'branch': 0.1}, {'node': 8, 'branch': 0.5}],
    8: ['N',{'node': 3, 'branch': 0.75}, {'node': 7, 'branch': 0.1}],
    7: ['N',{'node': 4, 'branch': 0.1}, {'node': 5, 'branch': 0.15}],
    6: ['N',{'node': 1, 'branch': 0.5}, {'node': 2, 'branch': 0.25}],
    5: ['L'],
    4: ['L'],
    3: ['L'],
    2: ['L'],
    1: ['L']
}
# Write code to solve problem here:

# Open the file and read the contents
with open('SSA_regions.fasta', 'r') as f:
    file_contents = f.read()

# Split the contents by sequence
sequences = file_contents.split('>')

# Initialize an empty dictionary to store the sequences
sequence_dict = {}

# Loop over the sequences
for sequence in sequences[1:]:
    # Split the sequence into header and nucleotide sequence
    header, nucleotides = sequence.split('\n', 1)
    
    # Remove any whitespace from the nucleotide sequence
    nucleotides = nucleotides.replace('\n', '')
    
    # Add the nucleotide sequence to the dictionary
    sequence_dict[header] = nucleotides

# Print the dictionary
print(sequence_dict)

0]:
Calculate the most likely ancestral sequence using the five sequences present in SSA_regions.fasta using the pruning function and tree above. For each site
print a single line with the most likely base and the likelihoods of A,G,C,T.
tree = {
9: ['N', {'node': 6, 'branch': 0.1}, {'node': 8, 'branch': 0.5}],
8: ['N', {'node': 3, 'branch': 0.75}, {'node': 7, 'branch': 0.1}],
7: ['N', {'node': 4, 'branch': 0.1}, {'node': 5, 'branch': 0.15}],
6: ['N', {'node': 1, 'branch': 0.5}, {'node': 2, 'branch': 0.25}],
5: ['L'],
4: ['L'],
3: ['L'],
2: ['L'],
1: ['L']
}
# Write code to solve problem here:
# Open the file and read the contents
with open('SSA_regions.fasta', 'r') as f:
file_contents = f.read()
#Split the contents by sequence
sequences file_contents.split('>')
=
#Initialize an empty dictionary to store the sequences
sequence_dict = {}
#Loop over the sequences
for sequence in sequences [1:]:
# Split the sequence into header and nucleotide sequence
header, nucleotides = sequence.split('\n', 1)
#Remove any whitespace from the nucleotide sequence
nucleotides = nucleotides.replace('\n', '')
# Add the nucleotide sequence to the dictionary
sequence_dict [header] = nucleotides
#Print the dictionary
print (sequence_dict)
#sequence_dict contains the read sequences.
Please write code to calculate the most likely ancestral sequence using the five sequences present in
SSA_regions.fasta using the pruning function and tree above.
For each site print a single line with the most likely base and the likelihoods of A, G, C, T.
Transcribed Image Text:0]: Calculate the most likely ancestral sequence using the five sequences present in SSA_regions.fasta using the pruning function and tree above. For each site print a single line with the most likely base and the likelihoods of A,G,C,T. tree = { 9: ['N', {'node': 6, 'branch': 0.1}, {'node': 8, 'branch': 0.5}], 8: ['N', {'node': 3, 'branch': 0.75}, {'node': 7, 'branch': 0.1}], 7: ['N', {'node': 4, 'branch': 0.1}, {'node': 5, 'branch': 0.15}], 6: ['N', {'node': 1, 'branch': 0.5}, {'node': 2, 'branch': 0.25}], 5: ['L'], 4: ['L'], 3: ['L'], 2: ['L'], 1: ['L'] } # Write code to solve problem here: # Open the file and read the contents with open('SSA_regions.fasta', 'r') as f: file_contents = f.read() #Split the contents by sequence sequences file_contents.split('>') = #Initialize an empty dictionary to store the sequences sequence_dict = {} #Loop over the sequences for sequence in sequences [1:]: # Split the sequence into header and nucleotide sequence header, nucleotides = sequence.split('\n', 1) #Remove any whitespace from the nucleotide sequence nucleotides = nucleotides.replace('\n', '') # Add the nucleotide sequence to the dictionary sequence_dict [header] = nucleotides #Print the dictionary print (sequence_dict) #sequence_dict contains the read sequences. Please write code to calculate the most likely ancestral sequence using the five sequences present in SSA_regions.fasta using the pruning function and tree above. For each site print a single line with the most likely base and the likelihoods of A, G, C, T.
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