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尽管在过去200年时间里,全球男性平均身高增长了15厘米左右,然而决定男性性别的Y染色体长度着实在不断缩短。早在1600多万年前,X和Y染色体拥有共同的来源,各自拥有1669个基因,而现在的Y染色体长度仅为X染色体的1/3。未来Y染色体是否会消失?这是否会意味着男性将从这个星球上灭绝?越来越短的Y染色体拥有特殊基因的X、Y染色体有高度的特异性。美国遗传学
In spite of the fact that the average height of men in the world has increased by about 15 centimeters over the past 200 years, the length of the Y chromosome, which determines male gender, has indeed been shortened. As early as 16 million years ago, the X and Y chromosomes share a common source, each with 1,669 genes, whereas the Y chromosome is only one-third the length of the X chromosome. Will the future Y chromosome disappear? Does this mean that men will be extinct from the planet? Shorter and shorter Y chromosomes have a special gene X, Y chromosomes are highly specific. American Genetics