outline evolutionary mechanisms. Drawing on the psychological literature from more than one topic area of research‚ evaluate how well evolutionary theory provides a satisfactory explanation for human behaviour. The aim of this essay is to assess whether Evolutionary theory presents an adequate explanation for human behaviour. I will be drawing from different psychological literature‚ especially focusing on the research areas of sexual selection and parental care and investment. Evolutionary theory
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competition for resources will favour organisms with better adaptability and certain variations over others hence leading to change in the rate of occurrence of certain traits within that population. This process is called natural selection. Relationship between evolution and natural selection is that main theory behind evolution is natural selection. The species with variations better suited to environment will survive and reproduce
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EVOLUTIONARY THEORY Evolution is the process in which significant changes in the inheritable traits (genetic makeup) of a species occur over time. The validity and value of evolutionary biology are based on continual analysis and interpretation of accumulating science data. THEORIES OF ORGANIC EVOLUTION • Historically three theories • The views of most modern biologists combine the second and third • No evidence of the first theory‚ that of Lamarck LAMARCK: Inherited Acquired Characteristics
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Evolutionary psychologists view human behavior and psychological traits as a result of evolutionary adaptation in response to reproductive needs – much like the concept of natural selection applied to reproduction‚ or sexual selection. Drawing from this perspective‚ evolutionary psychologists and professionals seek to explain the differences between male and female dating and mating rituals and sexual attitudes and how they have evolved throughout the centuries. For example‚ researchers employ the
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Throughout the course of life evolution has taken its place on plants and animals. One of the greatest evolutionary changes was the transition of life in water‚ to the transition to life on land. As you can imagine‚ both organisms had challenges moving from this single cellular water environment to a multi-cellular land environment. While the change was difficult‚ this new environment would help organisms flourish in life‚ giving them the ability to reproduce more freely‚ and eat with less competition
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“Eukaryotic chromosomes are generally much bigger than those of prokaryotes. In eukaryotic cells‚ replication may begin at dozens or even hundreds of places on the DNA molecule‚ proceeding in both directions until each chromosome is completely copied. Although a number of proteins check DNA for chemical damage or base pair mismatches prior to replication‚ the system is not foolproof. Damaged regions of DNA are sometimes replicated‚ resulting in changes to DNA base sequences that may alter certain
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The nucleus is the most obvious organelle in a eukaryotic cell. Virtually all eukaryote cells have a nucleus (red blood cells lose theirs and so are enucleate for most of their life-span of 180 days). It is surrounded by the nuclear envelope‚ a double membrane with contains a large number of pores. Molecules enter and leave the nucleus by these pores. The two lipid bilayers of the double membrane are separated by a gap of 20 to 40 nm‚ called the perinuclear space. The nucleus contains the cell’s
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Based on what you read in the poem‚ describe the relationship between the speaker and the “you” in the poem. How important was the relationship to the speaker? Support your response by referencing directly to the poem. In her poem “Since You” the poet Dionne Brand‚ has expressed a very profound romantic relationship between her speaker and the “you” in the poem. She has also revealed that the relationship was the most important thing in her speaker’s life. Dionne Brand makes these views to be
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humans in the past. With that in mind‚ it can be true that evolutionary psychology is solely based on comparisons of behaviours on only what history allows us to look back on. Homosexuality and homicide are two adaptive behaviours which both might represent genetic adaption of behaviour to increase survival and reproduction. in terms of homosexuality‚ Zietsch et al (2008) explains his theories providing an explanation to this form of evolutionary psychology on page 62. Perhaps homosexuals do not prevent
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The cell is the basic unit of all life. All living things-- tigers‚ trees‚ elephants‚ and men-- are made up of cells. A cell is alive-- as alive as you are. It breathes‚ takes in food‚ and gets rid of waste. It grows and reproduces‚ or creates one of its own kind. (Garrod 36) Most cells reproduce by dividing‚ so that there are two cells where there once was one. (Akkas 78) Every living thing is made up of one or more cells‚ and each of these cells was produced by an already existing cell. New cells
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