A full job description is available on the Mount Pleasant Township website; mpt-pa.com. E-mail resume with certifications to mpt@mpt-pa.com, or submit in person at 31 McCarrell Road, Hickory, PA. Deadline to apply is September 5, 2107.
Genetic changes that are described as de novo (new) mutations can be either hereditary or somatic. In some cases, the mutation occurs in a personâs egg or sperm cell but is not present in any of the personâs other cells. In other cases, the mutation occurs in the fertilized egg shortly after the egg and sperm cells unite.
The problem arises from the same 16-day turnover rate that make sperm such an infinitely renewable resource. Every batch of sperm represents an opportunity for genetic typosâcalled de novo mutationsâto be passed on. A 20-year-old man and woman will each pass on about 20 de novo mutations to a baby they conceive. By the time the couple is 40, a womanâs total has remained at 20, while a manâs has jumped to 65âand it keeps climbing from there.