Question

How would you best explain the relationship between number of Hox genes and animal body complexity?...

How would you best explain the relationship between number of Hox genes and animal body complexity?

A) Different Hox genes are expressed in different regions of the body.

B) An increase in the number of Hox genes meant that fewer regulatory genes could be controlled in a species.

C) An increase in the number of Hox genes allows for greater specialization in different body regions.

D) Hox genes have duplicated several times during animal evolution, but they are not responsible for an increase in body plan complexity.

E) As the number of Hox genes increases, the number of genes encoding proteins for appendage development decreases.

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