Heredity, Hormones and Human Behavior
Axia College of University of Phoenix
Nature versus nurture, which one could it be? If we believe that our genes are hardwired into our human genome, we would believe that nature or heredity influences human behavior. If we believe that our biological make-up can be affected by our environment then we would believe that hormones influence human behavior. Through collaboration of heredity and hormones, our behavior is influenced: by comparing and contrasting the two we can understand the entire functionality of the mind. Genes are basic units of inheritance that are reproduced throughout generations. They are a small part of DNA, and they direct particular traits of groups of traits. They are the essence of a human being, their make-up, and they are unmodifiable. Genes are carried by tiny threadlike bodies called chromosomes. They vary in size and shape and they come in pairs. (Maisto and Morris, 2005). Each species has a constant number of chromosomes that never varies, for example, mice have 20 pairs, monkeys have 27 pairs, and humans have 23 pairs. It takes approximately 30,000 genes to build a “healthy” human. (Maisto and Morris, 2005). Weight, height, skin color and many other traits are produced by the interaction of several genes. This process is called polygenic inheritance, and each of the genes contributes individually to the overall effect. (Maisto and Morris, 2005). As the chromosomes carries the genes, so does the bloodstream, hormones. The endocrine glands releases hormones and the bloodstreams carries these hormones throughout the body. Hormones organize the nervous system and body tissues, and can also have a dramatic effect on mood, learning ability, psychological disorders (as in depression), and may be responsible for a weak immune...
References: Maisto, A., & Morris, C. (2005). Psychology: An Introduction (12th Edition).
Alexandria, VA: Prentice Hall.
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