RosettaCodeData/Task/Bioinformatics-Sequence-mut.../Mathematica/bioinformatics-sequence-mut...

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SeedRandom[13122345];
seq = BioSequence["DNA", "ATAAACGTACGTTTTTAGGCT"];
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringReplacePart[seq, RandomChoice[{"A", "T", "C", "G"}], {randompos, randompos}];
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringReplacePart[seq, "", {randompos, randompos}];
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringInsert[seq, RandomChoice[{"A", "T", "C", "G"}], randompos];
seq = BioSequence["DNA", StringJoin@RandomChoice[{"A", "T", "C", "G"}, 250]];
size = 50;
parts = StringPartition[seq["SequenceString"], UpTo[size]];
begins = Most[Accumulate[Prepend[StringLength /@ parts, 1]]];
ends = Rest[Accumulate[Prepend[StringLength /@ parts, 0]]];
StringRiffle[MapThread[ToString[#1] <> "-" <> ToString[#2] <> ": " <> #3 &, {begins, ends, parts}], "\n"]
Tally[Characters[seq["SequenceString"]]]
Do[
type = RandomChoice[{1, 2, 3}];
Switch[type, 1,
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringReplacePart[seq, RandomChoice[{"A", "T", "C", "G"}], {randompos, randompos}];
, 2,
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringReplacePart[seq, "", {randompos, randompos}];
, 3,
randompos = RandomInteger[seq["SequenceLength"]];
seq = StringInsert[seq, RandomChoice[{"A", "T", "C", "G"}], randompos];
]
,
{10}
]
parts = StringPartition[seq["SequenceString"], UpTo[size]];
begins = Most[Accumulate[Prepend[StringLength /@ parts, 1]]];
ends = Rest[Accumulate[Prepend[StringLength /@ parts, 0]]];
StringRiffle[MapThread[ToString[#1] <> "-" <> ToString[#2] <> ": " <> #3 &, {begins, ends, parts}], "\n"]
Tally[Characters[seq["SequenceString"]]]