Achondroplasia, the most common cause of dwarfism, results from a mutation in the Wnt7 receptor.

Hairs begin as solid proliferations from the stratum germinativum of the epidermis.

Which of the following may not build community? 

Empowerment as a moral principle means that members of the school community should do which one of the following? 

Diaphyseal centers of ossification occur after formation of epiphyseal plates.

The urogenital sinus in males gives rise to a majority of the urinary bladder as well as the prostate gland.

The hypaxial region of the myotome will give rise to muscles along the ventral body wall.

Development of the fingernails precedes that of toenails by approximately 8 weeks.

Which of the following is a derivative of the midgut?

The cortex of the suprarenal glands arises from mesenchyme while the medulla arises from neural crest.