UV light does not just create repairable dimers in DNA bases, it can and does rip DNA apart. Enough exposure would cause more than enough irreparable damage to kill the cell and 99% of the cell being destroyed is certainly not salvageable.
The Delta flight is cheaper. But check a bag at a cost of $25 for the first checked bag each way on Delta, and your total fare climbs to $256 -- more than the cost of the Southwest flight, which includes free first and second checked bags. Add a second checked bag for $35 each way on the Delta flight, and you'll pay a whopping $326.
Tip. 1  Most airlines allow you to check a car seat free of charge and do not count it toward your total allowed baggage. Check with your airline for clarification of their policy. 2  When traveling with certain airlines, your car seat will arrive with the rest of your luggage on the baggage carousel.