This week you are to discuss the Galapagos Islands and evolutionary biology in five parts. First, watch the video above (https://www.youtube.com/watch?v=mcM23M-CCog ) for background information. You will need to supplement what you learn from this video with other reputable sources you find on the internet to answer the following questions:
(1) What is it about the geography and the geology of the Galapagos Islands that make them an ideal place to stimulate ideas about evolution in someone like Charles Darwin? The concept of geography deals specifically with where the islands are located and how close/far they are from the mainland. The concept of geology deals specifically with how the islands were formed.
(2) Describe the preparation (formal academic studies AND practical experience) of Darwin that allowed him to recognize important characteristics that linked populations of animals he studied in the Galapagos Islands to specific niches in their respective environments.
(3) Contrast Darwin’s ideas about how populations of organisms can change over time with the ideas of Jean-Baptiste Lamarck.
(4) Pick an interesting creature found only in the Galapagos Islands, provide a photo (giving full credit to the source of the photo), and describe the special adaptations of the animal that allow it to survive in the ecosystem where it is naturally found.
(5) Are there any other species in the Galapagos Islands that evolutionary biologists identify as being related to your favorite creature? Whether there are or aren’t, what is thought to be the evolutionary ancestor for the species you picked?
Important hint regarding the pertinent geology: how did the Galapagos Islands form, and how did this mechanism of formation create conditions that would lead to divergent populations of organisms that appear to have descended from a single species? Learn about the geography of the islands and figure out how their location interacts with how they were formed to cause the few species that could arrive there to adapt and specialize into a number of new species over time.
Reference are required for your information source in your main post.
Use the post below to answer some of the questions and off course other sources with credible references.
Living organisms are well structured and designed. For a eukaryotic organism of class Mammalia (a mammal), the smallest and most significant integral unit of matter is known as an atom. Different atoms form molecules. Therefore, a molecule is composed of two or more atoms held closely together by a chemical bond. Several molecules that are biologically essential are known as macromolecules, which are mainly formed from polymerization. Cells have several combinations of macromolecules that are surrounded by membranes that are referred to as organelles. Organelles are a simple structure that is found inside a cell. Each of the organelles performs an essential function (Arnellos, 2018). An example of an organelle in mammals is mitochondria. For instance, mitochondria produce energy for the cell.
Mammals are made of cells; a cell is the smallest critical unit of function and living organisms’ structure. Mammals are usually eukaryotic and have membrane-bound organelles and nucleus. Tissues are made up of cells that are grouped to form a similar function. Several tissues are then combined to organs and perform a standard function. Different organs form a higher level of an organization composed of functionally interrelated organs to form an organ system. Mammals are composed of several organ systems. For example, the circulatory system in mammals to carry blood from the body organs, from, and to lungs and is composed of several organs such as the blood vessels and heart.
Mammals living in a particular location are collectively known as a population. A community is made of several populations living in a specific area. For example, all animal living in the forest forms a community. An ecosystem consists of living things in a specific area combined with nonliving, including the surrounding air. The highest level of organization is the biosphere made up of many ecosystems, and it symbolizes the regions of life on the globe.
You outlined a number of levels of organization in biology in an earlier discussion, and have studied details about the various areas of biology throughout the course. For this week’s discussion you need to select the most interesting thing you learned in the course:
(1) Describe it and indicate what “level of biology” it resides in.
(2) Why is it your favorite?
(3) What did you learn about the level you are discussing that you didn’t know before you studied biology in this course?
Include a relevant reference: