Despite medical benefits offered by cloning, cloning is banned in most countries on religious or ethical grounds. Genetics contributes to our makeup, but so does environment, so a cloned person is not guaranteed to grow up exactly like the clone parent.
Critics also call cloning a return to eugenics, the practice of selective breeding to produce improved hereditary characteristics, which the United States and Nazi Germany used for forced sterilizations in the 20th century. Besides, evolution is a continuing process and we are not a finished product -- 700 genes have been identified that have evolved over the past 10,000 years.
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