Day 349 (Yq11.221-Yq11.23): DAZ genes lurking in million-letter palindromes

Day 349 has 23 protein-coding genes (browser view) including DAZ1 (deleted in azoospermia 1).

The DAZ genes seem to be important in sperm because they are missing when sperm are missing. Notably, these genes are located within one of a number of huge palindromes on the Y chromosome. Because Y is the only chromosome that can’t recombine, these regions may give the chromosome an alternate way to repair itself.

Click here to see all 8175345 letters of Day 349 with DAZ1 underlined.

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