#Question id: 5009
#Unit 11. Evolution and Behavior
A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of farther back helped to make possible the evolution of the tetrapod limb. This type of change is illustrative of
#Question id: 299
#Unit 1. Molecules and their Interaction Relevant to Biology
Which bond acts like a bridge two molecules formed by a covalent bond?
#Question id: 23989
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 15192
#Unit 8. Inheritance Biology
#Question id: 11137
#Unit 7. System Physiology – Animal
The motor (somatic nervous) system can alter the activities of its targets, the skeletal muscle fibers, because ________.