Why is it important for scientists to use blind tests?

human didn't come from monkeys man i hate these stupid teachers

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

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).