The questions below refer to the following description and figure.The figure below represents a cross section of the sea floor through a mid-ocean rift valley, with alternating patches of black and white indicating sea floor with reversed magnetic polarities. At the arrow labeled “I” (the rift valley), the igneous rock of the sea floor is so young that it can be accurately dated using carbon-14 dating. At the arrow labeled “III,” however, the igneous rock is about one million years old, and potassium-40 dating is typically used to date such rocks. Note: The horizontal arrows indicate the direction of sea-floor spreading, away from the rift valley.Which section of sea-floor crust should have the thickest layer of overlying sediment, assuming a continuous rate of sediment deposition?

Which tree shows the greatest evolutionary distance between chytrids and ascomycetes?

Use the following description to answer the question(s) below.In the ocean, on either side of the Isthmus of Panama, are thirty species of snapping shrimp; some are shallow-water species, others are adapted to deep water. There are fifteen species on the Pacific side and fifteen different species on the Atlantic side. The Isthmus of Panama started rising about ten million years ago. The oceans were completely separated by the isthmus about three million years ago.In the following figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the right (side B). The seawater on either side of the isthmus is separated into five depth habitats (1-5), with 1 being the shallowest.Which of these habitats is likely to harbor the most recently diverged species?

Use the following description to answer the question(s) below.In the ocean, on either side of the Isthmus of Panama, are thirty species of snapping shrimp; some are shallow-water species, others are adapted to deep water. There are fifteen species on the Pacific side and fifteen different species on the Atlantic side. The Isthmus of Panama started rising about ten million years ago. The oceans were completely separated by the isthmus about three million years ago.In the following figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the right (side B). The seawater on either side of the isthmus is separated into five depth habitats (1-5), with 1 being the shallowest.In which habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4?

The following question refers to the following phylogenetic trees. ​ Which tree depicts the closest relationship between zygomycetes and chytrids?

Use the figure to answer the following question.The segment of DNA shown in the figure has restriction sites I and II, which create restriction fragments A, B, and C. Which of the gels produced by electrophoresis best represents the separation and identity of these fragments?

In animals, what is the difference between reproductive cloning and therapeutic cloning?

Many identical copies of genes cloned in bacteria are produced as a result of which of the following processes?

Refer to the life cycles illustrated in the figure below to answer the following question(s).Which of the life cycles is typical for animals?

Which of the following statements correctly describes one of the main differences between embryonic stem cells and adult stem cells?