is the result of a monosomy (2n=45,5-) or segmental aneuploid
a portion of the short arm (2n=46,5p-) of Chromosome 5 [see karyotype].
Symptoms include a characteristic high-pitched cry ("cat cry"), low
birth weight, poor muscle tone, microcephaly, and mental
Children respond well to the home environment, and
is now less common.
Figure © 2010 PJ
3rd ed.; all
text material © 2011 by Steven