The Role Of Heredity, Environment And Epigenetics

One of the oldest debates in the history of Psychology is about Nature versus Nurture. Today, we know that both play a significant role in human’s life. Some people believe that it is genes which affects our way of life and some people believes that it is none other but our environment that greatly influences our lifestyle and some believe that both has tremendous impact on one’s way of life. Indeed in certain cases both our nature (our genes) and our environment roughly play an equal role in human life.

If we look at epigenetics it tells us how nature vs nurture interacts cohesively. In chapter three of Discovering Psychology, the Science of The Mind it states that “Epigenetics refers to the field of reversible development of traits by facts that determines how the genes perform.” (John T. Cacioppo and Laura A. Freberg, 2014 p. 73). With that being said, we know that our genes play a role

The classic debated topic of Nature versus Nurture has been and will always be a quarrelsome subject in the scientific world. Meaning, the issue of the level to which environment and heredity sway behavior and development in a person. Nature can be defined as, behaviors due to heredity. This means the behaviors is based on the inherited makeup of an individual and is an influence of the growth and development of that individuals’ all through life. On the other hand nurture is causes of behaviors that are environmental. This Intel’s the influence is from the individual’s parents, siblings, family, friends and all other experiences that individual exposed to during life. However, these concept of ideas supports the inborn genetic framework,

Advances in science today suggest neither nature nor nurture is exclusively responsible, but instead an interactive relationship between our genes and environmental influences. The influence that nurture has upon nature is a new and blooming field called behavioral epigenetics.

Consider the following scenario: John and his mother are both alcoholics. John has been exposed to his mother’s inappropriate relationship with alcohol since before he was born. In the age-old debate of nature vs. nurture, some would say it was merely natural for John to follow his mother’s path, a la the apple does not fall far from the tree—his addiction was inherited. Others would argue that John’s childhood experiences and home environment led him on the road to addiction. Many might question whether John would have fared better if he had been raised elsewhere. While John may have been a victim of circumstance or fate, a completely different angle can be considered. Perhaps John’s alcoholism is a genetic result—a result that was influenced by his unfortunate environmental factors. In other words, John inherited his nature via his nurture. The positions surrounding the explanation of John’s outcome have been debated for centuries by ordinary people, philosophers, geneticists and psychologists. With recent advancements, a second genome has been recognized and established as the “epigenome,” which is directly influenced by the outside environment (Francis). While extreme positions still exist within the nature vs. nurture debate, most scientists now agree that a combination of the two determines one's outcome; with the burgeoning field of epigenetics, however, the ability to overcome one's genes, to some extent, ends the debate and offers hope that can be viewed as American

Many of our personality traits are developed by the interactions that we have had with others during our informative years. Our behavior is a reflection of our own personality and there is considerable evidence to show that personality can be inherited. Genetics are particular molecular structures of genes, as it is explained through science the effect that these genes have on our behavior and our body’s actions throughout our lives. Both the Endocrine System and Heredity have a large influence on human behavior. They determine our moods, irritability, and even our level of energy, even though the environment still plays a huge role. These personality genes, work by changing the structure of neurotransmitters, or receptors or emitters in the brain, which affects how our brain cells communicate with each other.

I conducted an intriguing research on the relationship between epigenetics and psychiatric disorders. It is known that epigenomes are affected by environmental surroundings which can cause life changing results as we age. Also, a mother’s maternal behavior inspires the stress

The PBS video called “Epigenetics” brought to light some very interesting views. Through rats scientist have been able to see the works of epigenetics and believe that the finding have led to the idea that the change in genetics has the same effect on humans. The most interesting part of the video was that younger pairs of twins have very similar genes, but the older pairs of twin have more epigenetic difference in their genes. This validates the idea that the epigenetic difference in old twins is caused by environmental factors such as lifestyle choices. The idea also alludes to the idea that our parents and grandparents healthy and epigenetics may affect my heath and my children’s health. This leads to the inclination that my child’s health

Do the experiences or events that your parents, grandparents or even great grandparents had in the past affect your genes? Why do some humans have mental health issues and others do not? Behavioral epigenetics examines how nurture shapes nature, where nature refers to biological heredity and nurture refers to everything that occurs during the animal 's lifespan. Epigenetics is the study of alterations in an organism caused by modifications of gene expressions instead of alterations of the genetic code itself. Behavioral epigenetics is the field of study, which analyzes the role epigenetics have in shaping human or animal behavior. Epigenetics works by wrapping DNA around histone octamers to form nucleosomes. Genes will be transcribed or silenced depending on the spacing of nucleosomes, which is determined by complex processes, including post-translational modification of DNA and histones as well as the large numbers of chromatin regulatory proteins recruited to interact with these modifications (Nestler). Behavioral epigenetics explains why humans and animals behave the way they do, not by changing the DNA, but by modification of gene expression rather than alteration of the genetic code, which in turn changes behavior in multiple generations.

What is epigenetics? Epigenetics to me is the alteration of our genome that we are able to change in not only ourselves, but in our children and future generations as well all based on lifestyle habits we live today. After first watching the PBS video on epigenetics, I was astonished at how our ways of life have such a profound effect upon not only our genes but our future generations of children as well. In the video research was conducted on over forty identical twins ages ranging from three to seventy-four, this was to compare the lifestyle habits such as smoking, exercise, and different diets have on an individual. I found it fascinating that when there was comparing the genomes of the elderly Spanish twins compared to the three-year-olds;

How would you feel if you knew that the food you eat could affect your future offspring? The things you do today could affect your child tomorrow. The science of epigenetics examines this concept. Epigenetics is the study of how heritable genes are influenced by environmental factors and the lifestyle one chooses. To get a deeper insight into the great world of epigenetics, we will describe it’s origin, how it affects people, and how it can potentially help in the future.

It is often thought that our DNA is a concert blue print and the way we personally engage with the environment has no effect on our future generation. However through experiments and recent studies, scientists have discovered external environmental factors can effect ones DNA sequence. It was found that genes have the ability to switch on and off and affect how cells read genes. This new avenue is called Epigenetics. Epigenetics is the study of heritable changes in gene expression. It describes the outward phenotypic appearance that is not the result to changes in the DNA sequence but instead, changes to the chemical tags that overlay the genome. Epigenetics is often described as the missing link between the environment an individual is exposed

While the study of human genes is increasingly improving our understanding of human development, it is not solely our genetic makeup that determines how we will develop. Humans as a species share many universal traits, which make it easy to disregard the large influence the environment plays in development. Throughout the lifespan, the environment presents itself in many different positions that help determine and shape human development. By looking at the influence of the environment and genetics on human development we are able to create a more holistic view of this process and gain a better understanding of the complexities involved within it. Through this comprehensive lens, it is easy to see how probabilistic human development offers the greatest amount of explanation, unlike the predetermined views of genetic influence in the past, and that environmental influence has an extensive impact on human behavior.

Epigenetics can be hereditable or environmental factors that affect the expression of genes and lead to changes in gene expression. Unlike genetics, epigenetics does not only have to do with which genes are passed down to the offspring and the DNA sequence. The environmental conditions of the offspring’s parents impact the genes in their eggs and sperms by “switching on” certain genes and “switching of” others (Dowshen). Since the genes expression of the gametes are affect, the phenotypes of the offspring will change. Even in a person’s lifetime, environmental factors such as stress, chemical exposure, and diet can continue to impact gene expression through DNA methylation. During DNA methylation, a methyl group is randomly added to a 5-carbon cytosine ring, making 5-methylcytosine and these groups inhibit transcription. (Cheriyedath). Due the fact that transcription is not possible, the expressing of the genes in that section of the DNA strand will be suppressed. The attachment of the methyl group to DNA is not determined, which means that

Human growth and development is an incredibly complex process, influenced by both genetic and environmental factors. At certain times and for certain developments, genetic influences dominate, whereas at other times, environmental influences are more powerful which emphasizes the fact that genetic and environmental forces are always working together (Sigelman and Rider, 2009).