Need New Teen Athletes Classification System

Teen athletes have traditionally been  classified as "boys"  or "girls" so that  girls can participate in sports without having to compete against  boys who are usually stronger  and faster than girls.  This system worked as long as everyone agreed on which athletes were girls and which athletes were boys.  Today some disagree about who qualifies as girls and  who qualifies as boys.

One thing hasn't changed.   There are   two different genetic types  of  athletes.   One type has two "X" chromosomes.  The other has an "XY" combination of   chromosomes.     Athletes   who   have an "XY" combination of   chromosomes are usually stronger  and faster than  athletes who   have  two "X" chromosomes.  

To   insure  everyone  an equal  opportunity to participate in sports  athletes who   have an "XY" combination of   chromosomes should not  compete against  athletes who   have  two "X" chromosomes.

  The   "Y" chromosome can be detected using a microscope   because it is shorter than  the  "X" chromosome.     Thus   it would be easy  to divide athletes into "X" and   "Y" groups.

     Athletes might  want to give the groups  names like  "Xenas"   and "Yodas".