Why does prolonged exposure to uv light from the sun or tanning beds increase the risk for getting skin cancer? a. increased exposure to uv light decreases the risk of a mutation occurring b. increased exposure to uv light increases the risk of a mutation occurring c. increased exposure to uv light decreases the immune system function d. increased exposure to uv light has no effect on the risk for getting skin cancer

the answer is c. it will give up it's valence electron to the other atom.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'