In Early Human Embryos,the Gene HoxB7 Is Involved in Patterning

Multiple Choice

In early human embryos,the gene HoxB7 is involved in patterning the central nervous system.In later embryos,HoxB7 plays a critical role in growth and development of the kidney.These different functions of the same gene at different times and places are an example of ________.

A) homology
B) taphonomy
C) pleiotropy
D) unconformity
E) constraint