Align Two Sequences : Bioinfomatics – Biology Assignment

Internal Code – MAS1636

Biology Assignment

1) How many ways can you align two sequences, each containing two resides, Seq1:AB and Seq2:CD ? (ABC & D
are residues found in Seq 1 and Seq 2).

1-a) First when  no insertion/deletion are allowed

1-b) Second, when you are allowed to have insertions/deletions.
Write down the number of possible way to align two sequences and then indicate all possible alignments.

2) Please discuss how many ways you can align two sequences, each containing 3 residues, Seq1:ABC and
Seq2:XYZ.

2-a) Start with no  insertion/deletion anywhere,

2-b) Then insertion/deletion is allowed  at the beginning and at the end of the sequence but not in the middle.

2-c) Then insertion//deletion is allowed at any position including in the middle.

Write down the number of possible way to align two sequences and then indicate all possible alignments.

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