The Miller-Urey experiment demostrated that

Your

energy from lightning might have helped create Earth's firs organic molecules

liposome membranes containing organic molecules preceded true cells

organic molecules first could have come to Earth on a meteorite

iron-sulfide bubbles may have acted as the first cell membranes

i believe it would be c: tons.

sex cells are usually half's then they find another half and make a fertilize egg

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.'