QUESTION: Fix punctuation: One study compared chromosome breaks in 26 women with and 26 women without the inborn mutation
ANS: One study compared chromosome breaks in 26 women with and 26 women without the inborn mutation.

QUESTION: Fix punctuation: Step 3 Repeat the process
ANS: Step 3: Repeat the process

QUESTION: Fix punctuation: A special authority for monitoring the police has repeatedly been suggested but this has not happened yet
ANS: A special authority for monitoring the police has repeatedly been suggested, but this has not happened yet.

QUESTION: Fix punctuation: This was regretted later and several streets and airports in the larger cities of Turkey are now named after him
ANS:
This was regretted later and several streets and airports in the larger cities of Turkey are now named after him.