**Core Concept**
Gastroschisis is a congenital anomaly characterized by a defect in the anterior abdominal wall, typically to the right of the umbilicus, allowing the intestines to protrude outside the abdominal cavity. This condition is often associated with a failure of the intestinal mesentery to fuse with the abdominal wall during embryonic development.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of gastroschisis. The exposed intestines are prone to desiccation, infection, and ischemia due to the loss of the protective peritoneal layer and the exposure to the external environment. This can lead to complications such as bowel atresia, stenosis, and short bowel syndrome. The management of gastroschisis typically involves surgical repair and the use of a silo to gradually return the intestines to the abdominal cavity.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because gastroschisis is not typically associated with an omphalocele, which is a different congenital anomaly characterized by a herniation of the intestines through the umbilicus.

**Option B:** This option is incorrect because gastroschisis is not typically associated with a failure of the intestinal mesentery to fuse with the abdominal wall, but rather a failure of the abdominal wall to close.

**Option C:** This option is incorrect because gastroschisis is not typically associated with a genetic mutation or a familial predisposition.

**Clinical Pearl / High-Yield Fact**
Gastroschisis is often associated with maternal cocaine use, poor maternal nutrition, and other environmental factors during pregnancy. It is essential for obstetricians and pediatricians to be aware of these risk factors to provide appropriate counseling and care to affected families.

**Correct Answer: D.**