The reaction center of photosystem I consists of a core transmembrane complex made of . Multiple choice question. 12-14 protein subunits and 4 bound P700 chlorophyll molecules 8-10 protein subunits and 8 bound P700 chlorophyll molecules 10 protein subunits and 4 bound P700 chlorophyll molecules 12-14 protein subunits and 2 bound P700 chlorophyll molecules

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).