Late last year New Yorkers noticed a series of strange advertisements on the subway. “Have your best baby,” one promised. “IQ is 50% genetic,” noted another. Predictably, they stirred(激起，引发) controversy. Yet Kian Sadeghi of Nucleus, the embryo-screening startup behind them, was pleased. “This is a mass-market product(大众市场产品). What’s a better way of showing that it’s a mass-market product than the subway?(还有什么比地铁更好的方式来展示它是大众市场产品呢？)”
去年年底，纽约人在地铁上注意到一系列奇怪的广告。一则广告承诺：“拥有你最好的宝宝。”另一则指出：“智商有50%是遗传的。”不出所料，这些广告引发了争议。然而，其背后的胚胎筛查初创公司Nucleus的基安·萨德吉却很高兴。“这是一个大众市场产品。还有什么比地铁更能展示它是大众市场产品的方式呢？”
Nucleus is one of a growing number of Silicon Valley startups pushing the nascent(新兴的，初期的) technology. Noor Siddiqui of Orchid, a competitor, likes to say that “Sex is for fun; embryo screening is for babies.” Herasight, another rival, began offering a screening service last year that allows parents to examine an embryo’s risk of various diseases, and also estimates of its height, intelligence and longevity—at a cost of up to $50,000.(另一家竞争对手Herasight去年开始提供筛查服务，允许父母检查胚胎患各种疾病的风险，并预估其身高、智力和寿命——费用高达5万美元。) Nucleus adds hair and eye colour to the mix(加入其中). The burgeoning(迅速发展的，蓬勃的) industry aspires(渴望，立志) to reshape the way humans are made.
Nucleus是硅谷越来越多推动这项新兴技术的初创公司之一。竞争对手Orchid的努尔·西迪基喜欢说：“性爱是为了乐趣；胚胎筛查是为了宝宝。”另一家竞争对手Herasight去年开始提供筛查服务，允许父母检查胚胎患各种疾病的风险，并预估其身高、智力和寿命——费用高达5万美元。Nucleus还增加了头发和眼睛颜色。这个蓬勃发展的行业渴望重塑人类的诞生方式。
Not everyone is pleased. In many jurisdictions(司法管辖区), including Britain, screening embryos for sex, let alone(更不用说) for polygenic(多基因的) conditions such as hypertension or physical traits such as height, is illegal. Many geneticists and doctors’ groups are sceptical(怀疑的) that the technology works. Others say that it is unethical(不道德的).
并非所有人都感到高兴。在许多司法管辖区，包括英国，筛查胚胎性别是非法的，更不用说筛查高血压等多基因疾病或身高等身体特征了。许多遗传学家和医生团体对该技术是否有效持怀疑态度。其他人则表示这是不道德的。
The burden of perfection
完美的负担
