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.
Additional, overweight and oversized baggage is accepted on a standby basis. Bags that do not meet our size and weight restrictions will require special handling and additional fees. It's important to know that there are separate fees for each limitation you exceed: size, weight and quantity. Up to 10 bags may be checked per passenger on flights operated by Delta or Delta ShuttleÂ® and up to four total checked bags on Delta ConnectionÂ® carrier flights. 2  We may limit the amount of excess baggage when such excess prevents us from transporting up to two bags per passenger.