Choose all the answers that apply. Fertilization .

is necessary for sexual reproduction
results in a new cell with half the chromosomes of a gamete
is the union of an egg and sperm cell
can occur inside or outside the body
combines the chromosomes from two gametes

it would lead to upper respiratory infections and pneumonia.

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).