**Core Concept**
The development of tongue muscles is a complex process involving the migration and differentiation of mesenchymal cells from the occipital somites (myotomes). Specifically, the extrinsic muscles of the tongue are derived from the occipital somites, while the intrinsic muscles are of mesodermal origin.

**Why the Correct Answer is Right**
The correct answer is the intrinsic muscle of the tongue that is not developed from the occipital myotome. The intrinsic muscles of the tongue, such as the longitudinal, transverse, and vertical muscles, are derived from mesenchymal cells that migrate from the cranial mesoderm. This process occurs independently of the occipital myotomes, which give rise to the extrinsic muscles. The intrinsic muscles are responsible for the tongue's ability to change shape and move within the oral cavity.

**Why Each Wrong Option is Incorrect**
**Option A:** The styloglossus muscle is an extrinsic muscle of the tongue, derived from the occipital myotome, and is therefore not the correct answer.
**Option B:** The hyoglossus muscle is also an extrinsic muscle of the tongue, derived from the occipital myotome, and is not the correct answer.
**Option C:** The palatoglossus muscle is an extrinsic muscle of the tongue, derived from the occipital myotome, and is not the correct answer.

**Clinical Pearl / High-Yield Fact**
The intrinsic muscles of the tongue are responsible for its ability to move within the oral cavity, including the manipulation of food during mastication and the formation of speech sounds.

**Correct Answer:** C. Genioglossus is extrinsic muscle of tongue but correct answer of question is not present.