Evolution of cetaceans

Dolphins’ Methods of Hunting Many organisms have developed intriguing methods to hunt their prey. This report explains the hunting methods of several species of dolphins. Relevant background information is provided. Hunting strategies are broken into two categories: individual hunting methods, and group hunting methods. Not all hunting methods belong strictly in one category; several of the methods covered are exhibited in other marine organisms. One group hunting method is unique to dolphins.…

Evolution is an idea that has been toyed with by many other scientists for centuries, but is generally considered to be the “unifying theme” and the “binding force of all biological research” (Evolution: Theory and Science). Georges Cuvier and Jean-Baptiste Lemarck both had theories that kind of headed towards evolution, but they simply had pieces of the whole picture. The writings and theories of these two naturalists and others are what inspired Darwin on his travels. All this along with his…

self-awareness (De Waal 2007, Hunter 2010). To date, MSR has been located only in cetaceans, elephants, great apes, and magpies (Hunter 2010). MSR has been located only in these species which exhibit high levels of social interaction. These altruistic species have evolved spindle neurons which scientists believe are a crucial component of empathetic behavior in large-brained species (Hunter 2010). Great apes, cetaceans, and elephants are also the only non-human animals in which spindle neurons…

day you decide find out that all you can eat for the rest of your life is Cheetos. One day some freak accident occurs and the last Cheeto plant is destroyed and now you have nothing to eat. Sure, somehow you could evolve to eat something else, but evolution takes a lot of time (time you don’t have). If you ate things other than just Cheetos this would not impact you as much. This is an exaggeration and an oversimplification of a reason for biodiversity. Biodiversity allows for a more stable…

can eventually lead to the complex process of evolution in a species. The genetically derived mutation Polycythemia and the environmentally derived mutation lip augmentations, affect human evolution in a beneficial and detrimental way. Evolution is change in the aspects of a certain species over a period of time. This is caused by mutations which are variations or differences in the genome. Both genetic and environmental mutations affect the evolution of life in a negative and positive way.…

colour all vary differently in humans.11 The Hardy-Weinberg Principle is a method for geneticists to study genetic variation and evolution. It is a model that predicts the outcome and offspring of a non-evolving population. This model is then compared to an existing population and the differences between the non-evolving population and the existing population display evolution.12 An example is polyploidy. In animals, polyploidy is extremely rare, however, in plants, polyploidy is common and it…

expected that we know in these stories how the reproduction of animals and humans happen. It is only in the Australian story that people are created a very different way, through dreams. This is the biggest evidence for evolutionist to confirm that evolution is real. When it comes to procreation, evolving makes more sense and it is nicer to think about. It lacks incest behaviour but still leaves us wondering about the way the animals we evolved from came to be. The creator, god or spirit has…

become more animalistic and regress drastically from their former purity. This darker, more “realistic... Coral Island “ (Cox) is twisted so the true natures of humans come out and stay for perusal. Golding uses the symbolic nature of atavism and evolution through clothing, Ralph’s mentality, and the island itself to introduce and emphasize the psychological nature of the book. Throughout the novel, Golding continuously links the degradation of the clothes to the boy’s psyches. At the…

Throughout the years, authors have studied the interactions between the species of the earth and have conveyed their findings through their literary works. Authors, such as, Charles Darwin, Sir James George Frazer, and Jack London, all have published works in this area. These three authors have several points that are similar to each other, as well as their differences also. The points are: the relationships between humans and animals, the competition for life in all species, and the instincts…

23. The book “Survival of the Sickest” supports the quotation by Theodosius Dobzhansky stating that, “Nothing in biology makes sense except in the light of evolution.” The book explains the reasoning behind many wonderful events that are related to the human race and their interactions with other organisms through the idea of evolution. Dr. Moalem answers any question appropriate to the actions and behaviors of multiple species under the same goal- to survive and…