diff --git a/Bio334 b/Bio334
deleted file mode 160000
index ecf07809eef136dea33a2e9e0c7742ceb4745491..0000000000000000000000000000000000000000
--- a/Bio334
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ecf07809eef136dea33a2e9e0c7742ceb4745491
diff --git a/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt b/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f60a1d4a904b65ce848e1b97e5995bce3a11e31c
--- /dev/null
+++ b/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt
@@ -0,0 +1,16 @@
+TACGGGGCCGACATCTGCGGGGGGG
+GCGGGGCGGCCCCCGGTCAGACCAG
+AAAGGAGGCACCCCGCTTCCGCCGT
+GACTGGCATGTCGGGAGCGGGCCCC
+GAGCCAGGCCGCTGAGGGGCCGCCC
+TGCGCGCGACCCGCAGGGGCCCGCG
+GCGCCGACCAGCCGCCCCGCCCAGC
+CCCCTCGCGCTTCGACGGTCCGCAA
+CGCGCCAAGCCTCGCGAGCGCCGGC
+GCCTCCGACCGCGGGTGAGACCGCG
+GCGCGCGTAACGCGCTCCAGTGCCA
+GGCGCGTCCCCTTACGCCCGCGGGC
+AGTCCCCGGGCAGACACACGGAGGA
+CCGGGATCAAATTGAACCCAGAGCA
+TCACGACACCACGGCCGGGGCCCCG
+CAACCCGGGGTGGGAGCGGGACAGA