Which of the following bones is/are mostly derived from paraxial mesoderm?A. Occipital bone B. RibsC. HumerusD. Tarsus

The paraxial mesoderm gives rise to the somites, which further differentiate into the sclerotome, myotome, and dermatome. The sclerotome forms the axial skeleton, which includes the bones of the skull, vertebral column, and rib cage.

A. Occipital bone - Yes, the occipital bone is derived from the paraxial mesoderm. It is part of the skull, which is part of the axial skeleton.

B. Ribs - Yes, the ribs are also derived from the paraxial mesoderm. They are part of the rib cage, which is part of the axial skeleton.

C. Humerus - No, the humerus is not derived from the paraxial mesoderm. It is part of the appendicular skeleton, which is derived from the lateral plate mesoderm.

D. Tarsus - No, the tarsus is not derived from the paraxial mesoderm. It is part of the appendicular skeleton, which is derived from the lateral plate mesoderm.

So, the bones mostly derived from paraxial mesoderm among the options given are the Occipital bone and the Ribs.