Which of the following phyla have representatives that exhibit radial symmetry throughout their entire lives?

a. cnidarians
b. mollusks
c. annelids
d. arthropods

What did hunter gathers do to alter the environment?

What is the next step in the process after a substrate enters the active site of an enzyme

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.