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.
Overweight baggage is also charged on a flat-fee basis, rather than per kilogram, so even being overweight be 3 or 4 lbs may incur a fee of up to $75. On some routes, Delta has incremental fees, usually of $75 if your bag weighs between 51-70lbs (23-32kg), and $200 if between 71-100 lbs (32-44kg).elta Airlines Checked Baggage Allowance 2015 â Back to Top Checked Baggage Summary Delta has quite complex checked baggage rules, with different rules depending on your airline loyalty status, the route you're travelling on, and the seat class you will be flying in.