#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: 5010
#Unit 11. Evolution and Behavior
Which of the following steps has not yet been accomplished by scientists studying the origin of life?
#Question id: 5011
#Unit 11. Evolution and Behavior
A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from lungs of an ancestral fish is an example of
#Question id: 5012
#Unit 11. Evolution and Behavior
A | Silurian | I | Seed plants appear |
B | Devonian | II | Gymnosperms dominant |
C | Carboniferous | III | Invasion of land by primitive land plants |
D | Jurassic | IV | first reptiles |
#Question id: 5013
#Unit 11. Evolution and Behavior
Following is correct match
| Periods | Age of evolutionary event |
| A- Jurassic | I- Fish |
| B- Ordovician | II- Amphibian |
| C- Devonian | III- Gymnosperm |
| D-Carbonyferous | IV- Invertebrates |
#Question id: 5014
#Unit 11. Evolution and Behavior
Following geological time period and major evolutionary event?
I. Devonian A. Gymnosperms dominant
II. Jurassic B. Amphibians diversify; first reptiles
III. Carboniferous C. Mammals appear
IV. Triassic D. Seed plants appear