Can we conclude that President Thomas Jefferson could have fathered Sally Heming's son Eston using the Y chromosome if we know that President Thomas Jefferson's maternal uncle and Eston Hemings Jeffson have the same Y chromosome?

Yes or No

the correct answer is b

it would be rhyolitic hope this

your spelling is a little off : ]

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).