DNA damage can also occur in the form of broken bonds as in the sugar-phosphate backbone of DNA. This type of DNA damage can cause deletion mutations if pieces of DNA break away from the molecule. When those pieces rejoin a different molecule of DNA, what type of mutation has occurred?

A)Messenger Mutation
B)Mechanical Mutation
C)Translocation Mutation
D)Relocation Mutation

i think its B)Mechanical Mutation

Explanation: Because Sometimes, radiation damages a single base on one strand of DNA. This can occur chemically when a hydroxyl (OH-) free radical reacts with a hydrogen atom and forms hydrogen peroxide (H2O2). It is fairly easy to repair damage like this if the complementary (or opposite) strand is undamaged. This is because the DNA sequence on the complementary strand can serve as a template during DNA replication.  

In this case, the cell uses a mechanism called Base Excision Repair (BER). This is the process of cutting out and replacing a single nucleotide.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.