#Question id: 16101
#Unit 7. System Physiology – Animal
#Question id: 14514
#Unit 13. Methods in Biology
#Question id: 5004
#Unit 11. Evolution and Behavior
Pax-6 usually causes the production of a type of light-receptor pigments. In vertebrate eyes, though, a different gene (the rh gene family) is responsible for the light-receptor pigments of the retina. The rh gene, like Pax-6, is ancient. In the marine ragworm, for example, the rh gene causes production of c-opsin, which helps regulate the wormʹs biological clock. Which of these most likely accounts for vertebrate vision?
#Question id: 32276
#Unit 2. Cellular Organization
#Question id: 26945
#Unit 10. Ecological Principles
If the net reproductive rate is less then 1 than it represents____