1) Which feature in cnidarians is the strongest indicator that they are more complex than sponges? They have the ability to reproduce sexually.
They have the ability to attach to surfaces.
They have a medusa body form.
They have nerve cells.

The answer is "They have nerve cells". Edge. 2021

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Which layer will become saturated first when rain falls?