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Yes, but that's possible because the DNA is very similar. That does not imply the ability to interbreed and produce a viable new organism. From what I've seen, the "chimeras" are limited to things such as a mouse whose liver contains some human liver cells, for example. To all appearances, it's a mouse.

From my own experiences and that of my children, I don't believe public schools in the U.S. are doing a very good job of teaching science. It seems any time I go online to find information regarding all sorts of science, most sites are from the UK or Australia or some other country. Of course, there are exceptions and I know we do have some impressive research going on at universities, but overall science just doesn't seem to be emphasized in public schools. Do you think it's because there are not enough qualified people who want to teach or something else. I believe those students who excel at science are often cheated out of furthering their studies because science curriculum is limited in high schools. Just wonder what your opinion is. And thanks for your help and patience!