diff --git a/data/chromosomes.csv b/data/chromosomes.csv
new file mode 100644
index 0000000..9e163f4
--- /dev/null
+++ b/data/chromosomes.csv
@@ -0,0 +1,25 @@
+name,length
+chr1,248956422
+chr2,242193529
+chr3,198295559
+chr4,190214555
+chr5,181538259
+chr6,170805979
+chr7,159345973
+chr8,145138636
+chr9,138394717
+chr10,133797422
+chr11,135086622
+chr12,133275309
+chr13,114364328
+chr14,107043718
+chr15,101991189
+chr16,90338345
+chr17,83257441
+chr18,80373285
+chr19,58617616
+chr20,64444167
+chr21,46709983
+chr22,50818468
+chrX,156040895
+chrY,57227415