| | Omnipelagos.com ~ article "Micropenis" |
 | | A lower incidence of alleles believed to cause the micropenis condition have been found in studies of several Asian populations, including Japanese, Chinese (of varying ethnicity) and Vietnamese samples. |
 | | The presence of a micropenis in these subjects are lower than that of Caucasian populations, and (age range: 0-14, median age: 7) is considered to be due to a higher mutation rate for the SRD5A2 gene, which encodes for the enzyme 5{alpha}-reductase-2 and plays a role in male sex differentiation (Sasaki et al. |
 | | The incidence of alleles related to the micropenis condition in other racial groups has not been subject to medical research, though by the definition of the micropenis condition, it is reasonable to assume that idiopathic-type cases would occur in members of all races. |
| www.omnipelagos.com /entry?n=micropenis (867 words) |