MantisBT - MEGA
View Issue Details
IDProjectCategoryView StatusDate SubmittedLast Update
0000837MEGATree Explorerpublic2018-07-02 00:142023-04-14 00:37
Reporterguest 
Assigned Togstecher 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusassignedResolutionreopened 
PlatformPCOSWindowsOS Version10
Product VersionMEGA 11 (Graphical Interface version) 
Target VersionFixed in Version 
First NameJesper
Last NameMebus
Emailmebus@msn.com
Confirm Emailmebus@msn.com
Summary0000837: Error in drawing an UPGMA tree
DescriptionReport bugs or other issues regarding the MEGA software
In the Danish High School system, the use of sequence data in the national graduation test has been used for several years. One of the tests is a (constructed) sequence as shown in 'Steps To Reproduce'.
The distance matrix for MEGA 7 and MEGA 10 is the same. Calculating the UPGMA tree by hand showing the length of the branches by number of differences the calculation and the length of the branches maches results produced in MEGA 7. In MEGA 10 the calculation connecting the two subtrees does not distribute the branch length on the two branches but all the difference on one of the branches and a length of 0 on the other branch. This must be an error in the MEGA 10 program calculating UPGMA.
Steps To ReproduceSave the sequences as a fasta file. Load it into MEGA 7 and MEGA X. Analyze the data. Construct/test a UPGMA tree. Compare the differences.
Fasta data:
>Sibirisk_Tiger
GCACCGTACCCCCCTCACTTTGTGGCACCTCTATATAATGCTACTAGGCTGCCG
>Sydkinesisk_Tiger
ACGCCGCACTCCCTCCGCTTTGTGGCATCTCTACATGATGCCATCAAGCCACTG
>Indokinesisk_Tiger_1
GTACCGCACCCCCCTCGCTTTATAGCACTTCTATATAATGCTACTAGGCTGCTG
>Indokinesisk_Tiger_2
GCGCCGCACCCCCCTCGCTTTGTGATATCTTTACGTAATGCTACTAGGCTGCCG
>Sumatra_Tiger
ACGCCGCACCCCCTTCGCTTTGCGGCGTCTCTACATAACGCCATTAGGTTGCTG
>Bengalsk_Tiger
GCGCCGGACCCCCCTTGCTCTGTGGCATCTCTACATAACGTCATTAGACTGCTG
Additional InformationA picture of the two trees is uploaded.
TagsNo tags attached.
Relationships
Attached Filespng Two trees.png (131,926) 2018-07-02 00:14
https://megasoftware.net/mantis_bt/
Issue History
Date ModifiedUsernameFieldChange
2018-07-02 00:14guestNew Issue
2018-07-02 00:14guestFile Added: Two trees.png
2018-07-23 10:38gstecherNote Added: 0004051
2018-07-23 10:38gstecherStatusnew => resolved
2018-07-23 10:38gstecherResolutionopen => fixed
2018-07-23 10:38gstecherAssigned To => gstecher
2023-04-13 23:17guestNote Added: 0006166
2023-04-13 23:17guestStatusresolved => feedback
2023-04-13 23:17guestResolutionfixed => reopened
2023-04-14 00:37guestNote Added: 0006169
2023-04-14 00:37guestStatusfeedback => assigned

Notes
(0000774)
paul   
1969-12-31 17:33   
Ask user to download MEGA#4025. Check if she/he is using Beta version.
(0000778)
paul   
1969-12-31 17:33   
User start to use MEGA 4025. Not a bug. Close.
(0004051)
gstecher   
2018-07-23 10:38   
fixed in 10.0.4
(0006166)
guest   
2023-04-13 23:17   
ggg
(0006169)
guest   
2023-04-14 00:37   
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