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After Watson and Crick proposed the double helix structure for DNA, three models for DNA replication were proposed: conservative, semiconservative, and dispersive. In the conservative model, the first replication produces one daughter molecule containing both parental strands and another containing all new strands. In the semiconservative model, each parental strand […]

For each of the following, please explain in detail the major discovery/discoveries the person is known for. Make sure to give name of fossil, genus/species (official scientific name), discovery site such as country/location, and date of discovery. Each should be at minimum 2-3 sentences, up to a full paragraph. Johann […]

1. What are the defining features of life? 2. Understand the steps involved in evolution by natural selection, as seen in the Darwin’s finch example or if presented with a new example. 3. What are three biogeographical patterns that support predictions from evolutionary theory descent with modification from a common […]

Review the videos below on the steps of muscle contraction: 1) Events at the neuromuscular junction 2) Excitation-contraction coupling 3) Crossbridge cycle These videos illustrate the steps that occur for skeletal muscle cells, which are very similar to cardiac, heart, muscle cells which contract in a very similar way. 1 […]