What came first, the chicken or the egg?
先有鸡还是先有蛋?
The egg. Final answer. As the geneticist Haldane remarked, "The most frequently asked question is: 'Which came first, the chicken or the egg?' The fact that it is still asked proves either that many people have never been taught the theory of evolution or that they don't believe it." With that in mind, the answer becomes obvious. Bird evolved from reptiles, so the first bird must have come out of an egg--laid by a reptile.
最终答案:先有蛋。遗传学家霍尔丹说,“人们经常会问先有鸡还是先有蛋这个问题,那只能说明人们没有学过进化理论或者说大家根本不相信进化理论。”如果相信进化理论的话,那么这个问题的答案是显而易见的。禽类是由爬虫类进化而来,所以,第一只禽鸟肯定是从爬虫类孵化的蛋里出来的。