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Reptiles 1. Which is the vertebrate class that is considered the first entirely terrestrial? 2. Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin? 3. What are instances of a carnivorous and an herbivorous […]

Wild type Arabidopsis is a selfing diploid plant with 2n=10. You notice five different varieties with distinct phenotypes that involve leaves and fruit of abnormal size, shape and color. These mutations do not breed true and have odd segregation patterns. A) Suggest a chromosomal basis for these mutations and explain […]

Assignemnt: Age of Oil As you know, our world is heavily dependent on oil. In Chapter 6 of Contemporary Environmental Issues, you have read that there is concern about the possibility of reaching a peak in oil production, while Chapter 8 of Contemporary Environmental Issues introduces a variety of possible […]

If photosynthesis is to occur at all, the plant must be able to intercept light. The better a plant is in intercepting the light, the greater opportunities the plant has to produce food. Why have so many plants developed broad, flattened leaves? What is heliotropism, and how does it make […]