Non-constituitive system with visible light energy breaking covalent t-t bonds multiple enzymes may repair an a-c error left unrecognized by dna polymerase catastrophic dna damage caused by ultraviolet light can be survived by the cell with this a "spell check" function by the normal replication enzyme to ensure fidelity thymine dimer-containing section of dna is cut out, resynthesized and sealed
a. proofreading
b. photoreactivation
c. mismatch repair
d. sos repair
e. excision repair

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

b is dominant over the allele for the white fur.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.