List the odd one out among the following
Trisomy 18 is Edward syndrome & not Noonan syndrome. Noonan syndrome occurs in both males and females with a normal karyotype(46,XX and 46,XY). Refer to the image below.
Trisomy 18 (Noonan syndrome)
Trisomy 21 (Downs syndrome)
Trisomy 18 (Edwards synd.)
Trisomy 13 (Patau synd.)
Single Gene Disorders