Hox genes ____.
A) control the formation of shells
B) control the development of individual body regions
C) mostly evolved after the Cambrian explosion
D) guide the formation of exoskeletons
E) evolved before the Cambrian explosion
Correct Answer:
Verified
Q15: Sessile organisms _.
A)move about freely
B)move only to
Q16: An organism classified as an autotroph _.
A)is
Q17: The Precambrian-Cambrian boundary represents the first appearance
Q18: One of the most significant roles of
Q19: Fusulinids, greatly diversified in the Pennsylvanian and
Q21: The 360-million-year-old Acanthostega _.
A)had limbs but could
Q22: Over geologic time, _ open up vast
Q23: What characteristic did the earliest fish have?
A)armored
Q24: The vast epeiric sea of the Middle
Q25: What feature distinguishes the two subclasses of
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