Answer: the formation of elementary bodies is not part of the life cycle
Explanation:
Some of the characteristics of chlamydias include:
• Chlamydias are gram-negative
• They are also obligate parasites and they need the cells of their host for growth
• The infectioua form are their elementary bodies.
• The reticulate bodies of the chlamydias differentiate into the elementary bodies.
Therefore, the option that isn't a characteristic is that the formation of elementary bodies is not part of the life cycle.