g Warfarin is metabolized by the CYP2C9 protein. The common allele of this gene is CYP2C9*1, and an individual with two copies of this allele metabolizes warfarin at a rate that is typical of most people. The CYP2C9*2 and CYP2C9*3 alleles are also present in European populations. Each variant allele produces CYP2C9 proteins with a single amino acid change. These changes to the DNA sequence can be described as variants.

dogs is better and probably lizards.

wegner's theory did not explain how the continents could move

explanation:

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).