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Efforts To Turn Elephants Into Woolly Mammoths Are Already Underway
Jason Koebler writes: "Researchers are working to hybridize existing animals with extinct ones in order to create a '2.0' version of the animal. Using a genome editing technique known as CRISPR, Harvard synthetic biologist George Church has successfully migrated three genes, which gave the woolly mammoth its furry appearance, extra layer of fat, and cold-resistant blood, into the cells of Asian elephants, with the idea of eventually making a hybrid embryo. In theory, given what we know about both the woolly mammoth genome and the Asian elephant genome, the final product will be something that more closely resembles the former than the latter."
What you're talking about is basically natural crossbreeding, not the type of genetic engineering that involves modifying the DNA itself of an organism. By "natural" I include such mechanical techniques as artificial insemination, extracting the sperm and eggs from mature adults and mixing them up. With natural crossbreeding you get the whole shebang, you let nature decide which genes become active and dominant. In theory, with DNA level genetic engineering you can specify which traits you want to get. I'm not saying this is a good thing, only that you can potentially get more control by "editing" (the word used in the article) the genes that simpy mixing the semen and egg of two different species.