Manipulating Human Genes

Should changes affecting future generations be banned?

Introduction

Recent news from China announcing the births of the first genetically modified babies has shocked scientists worldwide and intensified a long-simmering debate about whether genetic changes that are passed down to succeeding generations of humans — so-called germline editing — should be permissible. Some predict a dystopian future with a superior human species boasting “designer” traits such as exceptionally high IQ or extraordinary athletic ability — most likely available only to wealthy parents who can afford the technology. But many prominent scientists argue that making changes at the embryonic stage may be the only hope for certain parents carrying a genetic disease to bear a healthy child. Twenty-nine countries, including the United States, forbid the use of germline editing to produce genetically modified children. Some ...

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