The answer is; B
Mutations change the order of nucleotide and therefore affects codons that code for proteins. A different protein is thus produced from the wild type hence creating variations. Genetic shuffling in sexual reproduction, also called gene recombination occurs during meiosis and also when different organisms exchange genetic material such as in bacteria.
photosynthesis materials aka H20 CO2 ( water and carbon dioxide)
It is most affected in the surface zone.
C they are always found in homologous pairs
