Multiple alignments and Phylogeny

a)-produce the multiple alignment and the phylogenic tree of the three following sequences in Swiss_prot
                 -SCG1_HUMAN
                 -SCGA_XENLA
                 -STHM_MOUSE
Hint   Solution

b)-Discuss the results. What is wrong. Propose a strategy?
Hint   Solution

c)-Add sequences from Swiss_prot in your list , make a new multiple sequence alignment and a tree.
Hint   Solution

d)-Discuss the results and propose a new strategy in order to obtain a better tree.
Hint   Solution

e)-Obtain the nucleotide sequences of your sequences from the EMBL database and align them
                        (NOTE: the nucleotide sequences of sg1_mouse and sg1_human are not available)
Hint   Solution

f)-use your multiple sequence alignment with the programs distance and growtree. Produce the rooted tree corresponding to your nucleotide alignment.
Hint   Solution
 

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