All three processes (decomposition, photosynthesis andrespiration) can occur in the Light Bottles. Oxygen is producedduring photosynthesis and consumed by respiration and decompositionin the bottle. In a healthy lake, ample photosynthesis occurs. In this case,which dissolved oxygen test bottle should have the highest levelsof oxygen?     a. Time 0 orinitial bottle […]

Q1. In a cross between a purple flowered plant and a white flowered plant, all 73 of the offspring had purple flowers. What are the most probable genotypes of the parent plants? Q2. Theoretically molecular clocks are to molecular phylogenetics as radiometric dating is to phylogenetics that is based on? […]

What were the components of the pectoral girdle in early fishes and how has it changed in tetrapods? Specifically, what is the typical fate of the coracoids and clavicle in the tetrapod girdle? What is the function of the pelvic girdle? What are the structural components? What changes have occurred […]

True or false 1. When bidirectional replication forks from adjacent origins meet, a leading strand always runs into a lagging strand. 2. Each time the genome is replicated, half the newly synthesized DNA is stitched together from Okazaki fragments. 3. Telomerase is a polymerase that carries its own RNA molecule […]