Boundaries of the I-Function in Twins Identical, conjoined, and half-twins are all examples of intrinsic variability in humans. Intrinsic variability exists in all animals and is an adaptive mechanism built into the nervous system in response to input. This mechanism allows humans to distinguish the same inputs as different from one another and therefore, the possible outputs vary with time. It is possible that due to identical genetic input, the twins could share identical neural pathways and identical I-Functions. This hypothesis could explain the identical behaviors and inter-connectedness of feelings and thoughts that twins share. Differences that are seen in twin behaviors could simply be due to intrinsic variability causing differing output or behaviors. During ovulation, when a woman releases an ovum, three different processes can occur. First, the ovum can remain in one piece all the way to the uterus where, if not fertilized, it will be shed out of the body along with the unused endometrium. Second, the ovum, if fertilized, can develop into a single embryo, which is the most common type of pregnancy in humans with about 99% of all births being singletons (1). Finally, the ovum can split into two separate halves resulting in genetically identical twins. The three types of twins previously mentioned are identical, which are created when the fertilized ovum separates into two complete, identical parts, conjoined, which occur as a result of a fertilized ovum not completing the equal separation resulting in two fetuses fused together in some way, and half-twins or polar body twins, which are made when an unfertilized ovum splits into two complete, identical parts and is then fertilized by two different sperm. The frequency of identical twins is 3.5 per 100 births (1) and the frequency of conjoined twins is 1 birth per 50,000 with only 100 known cases surviving their first year (5). There is no scientific explanation for why an ovum splits into two or more parts. It has been observed that ovum splitting can be hereditary but can also occur spontaneously. This spontaneity or unexplained divergence from normal egg growth and fertilization could be due to intrinsic variability. This intrinsic variability could also be connected to certain differences in behavior of two genetically and culturally identical twins. Ideally, one could say that twins with identical genetic information and environments would have extremely similar, if not the same neural pathways and central pattern generators (CPGs).
Baseball?s reputation has been painted with a red asterisk. The non-medical use of steroids has been banned according to the Anabolic Steroid Control Act of 1990. Many baseball athletes have been caught or presumed illegal users of HGH or Steroids since the act passed in 1990. All these athletes have one thing in common, they want to have an edge or advantage on the game. Some athletes even admit to administering the drug to other athletes and themselves. Jose Conseco testified to personally injecting the steroids into Mark McGuire (Cote).
Children who have grown up in America have been brought up with baseball and have looked up to a sports figure as one of their heroes. Steroids and other PEDS have tarnished the American past time favorite game. These drugs have cause doubts and suspicion about the validity o...
Since at least the 1980’s performance-enhancing drugs (PEDs) have been a major challenge in the world of Major League Baseball, and past trends indicate they will continue to pose an ongoing problem. A number of the most prominent and accomplished professional baseball players, such as Alex Rodriguez, Barry Bonds, Mark McGwire, Jason Giambi, Roger Clemens, are also the most famous examples of baseball players who have broken longstanding records, attracted countless numbers of fans, and allegedly have taken performance-enhancing drugs. Athletes who have been caught using steroids in order to increase and better their performance rates have been suspended, fined and traded from the teams on which they once played. Despite the punitive actions taken against them by the League and lawmakers, players continue to use performance-enhancing drugs and likely will continue to do so, because the associated athletic effects will draw more fans and bring more money to the individual player and franchise.
Natural birth is a method of childbirth in which medical intervention is minimal and the mother practices relaxation and breathing techniques to minimize pain during delivery. Modern obstetrics has created an entire industry to observing and
All over the world, there are many different medical cases discovered. There are very rare ones and some common ones as well, we often see them everyday or on television shows. An example of one of these cases would be the Hensel twins,they are conjoined twins.Conjoined twins are very rare, that occur once in every 200,000 live births.Which means that most people in their lifetime will never get a chance to meet conjoined twins. Many people question how to categorize conjoined twins, most just categorize them as humans. A human is just continuity of life to be the same human,while a person is rational, moral and agent. John Locke puts the twins in thought when speaking of the Day-Man and Night- Man, a man with one body with
Opening day isn’t even here yet, and already we have enough controversy to last us the whole season. At a time when we’d much rather be thinking about the smell of fresh cut grass, hot dogs and pennant dreams, we’re forced to deal with a far darker issue. Now more than ever, there is alarming suspicion concerning apparent steroid drug use in Major League Baseball. As an avid baseball watcher and player of the game for twelve years this scandal is of great concern to me. In the time to come I will be informing you of how steroid use has tarnished baseball’s image, allowed for more records to be broken unfairly and the harmful effects it has on your body.
Anabolic steroids have been abused by Major League Baseball players for years, it’s time to forever ban the use of Performance Enhancing Drugs before they ruin America’s past time. Why should athletes be able to cheat when teammates or rivals are competing with honest effort? Every year records are broken and new heights are achieved, the game of baseball is very simple yet very humble, and to deceive the game you love, forever will you be punished. Let me inform you with the origin in which PEDs were first used and where they came from, regulation, and a possible solution.
This means that all the sperm in males and eggs in females are produced from meiosis. Sperm and egg cells are haploid cells-they contain only one of each type of chromosome. Meiosis actually starts with a diploid cell that undergoes two divisions; the end products are four gametes, all genetically different. Meiosis is known as a reduction division because the daughter cells always contain half the amount of chromosomes as the diploid beginner cell. Chromosomes come in pairs and these pairs are called homologous pairs. Homologous chromosomes mean that both of the chromosomes in the pair have the same gene sequence. Human somatic cells(diploid) contain 46 chromosomes consisting of 23 homologous pairs; therefore, human gametes, which are haploid, have 23 total chromosomes-one from each homologous pair. Just like in mitosis, meiosis undergoes all of the same phases. However, because meiosis involves two divisions, the cell goes through all the phases twice. When referring to the first time the cell undergoes a phase, we say 1, and when referring to the second time, we say 2. For example, when a cell starts prophase the first time in meiosis, we say it is going through prophase 1(P1). Also, there are some differences in the process itself. During P1, homologous chromosomes exchange a section of themselves in what is known as crossing over. This provides a source of genetic variation since part of each chromosome switched places with each other, thus making both chromosomes distinct from the original. Another important difference to know is that in anaphase 1, the doubled chromosomes are not separated into sister chromatids. This doesn’t happen until A2 to ensure that each of the four gametes receives one of each kind of chromosome. There are many key points to understand about meiosis. The first being that cells in meiosis do not go through interphase twice. Interphase is a “one-time” thing; DNA
Baseball is cleaning up its image with a new drug testing policy implemented for the baseball season. The new agreement between the players, the owners, and Major League Baseball to test for performance enhancing drugs is a vast improvement over the previous deal. Although enhancing drug seem trivial, it is in fact crucial of today’s concern over the enhancing drug plenty of room for those who want to cheat. “ I am an athlete and the I think performance enhancing drugs are trivial because affected by the use of illegal drugs, raises concerns about ethics and morality in the world of baseball”. Let’s face it; using performance enhancing drugs is cheating.
“Ninety-six seemed to be the limit; seventy-two a good average. From the same ovary and with gametes of the same male to manufacture as many batches of identical twins as possible” (Huxley 8). One of the largest differences in the two processes occur during the embryo transfer. In the book, the embryos are put into containers rather than being transferred to a woman’s womb.
As early as 2010, 35.7% of adult Americans are obese, which is the highest level of obesity in the history of the United States. There are a number of environmental factors that contribute to obesity, the majority being the number of fast food restaurants and the recent outbreak of binge eating. Evidence shows that bingeing on sugary, tasty foods increases dopamine in the brain and in doing so possesses addictive habits. Apparently there have been several psychological and biological similarities between food addiction and drug dependence including loss of control and craving. One of the articles will look at environmental factors that might contribute to the obesity epidemic, and it will also compare the medical similarities and differences of drug dependence and food addiction.
This takes time, a pregnant woman is required to do this sperm and egg merge after a zygote. A zygote is "a human embryo". There is 4 stage in pregnancy. The fourth stage is difficult and which we currently have a child of 8 months.
This essay explores the work of a modern manager and further analyses it to understand its relevance with Fayol’s managerial functions. The significance of the economic and technological conditions in the organisation’s general environment upon his work is also subsequently discussed. On top of that, a comprehensive evaluation and comparison between various school of thoughts on the discussed topics will also be presented, fully supported with evidence.A manager is defined as someone who coordinates and overlooks the work of other people so that organisational goals can be accomplished (Robbins, Bergman, Stagg, and Coulter ,2012). Due to the consistently evolving nature of the economy, a clear guideline for a manager’s work ceases to exist. Each manager performs different tasks according to their work. Nevertheless, modern management practice generally revolves around the paradigm of Henry Fayol’s key managerial functions of planning, organizing, leading and controlling despite experiencing various trajectories throughout the years. This notion is supported by Carroll and Gillen (1987), who affirmed that classical functions still represent the most useful way of conceptualizing the manager’s job.
The female reproductive systems is made of 9 parts. The sex cell for the female reproductive system is called the egg or ovum. The egg spends it’s dormant life in the ovaries until it is released. The egg has 23 chromosomes within it. The ovaries have two goals: to create and house eggs and the release the female sex hormones, estrogen and progesterone. The fallopian tubes are what the egg travels through to reach the uterus. Fallopian tubes contain tiny hair-like structures called cilia; the cilia allows for mobility of the egg. The fallopian tube is roughly the size of 2 hairs, and is the site of where ectopic pregnancies happen. The process of the egg getting released from the ovaries through the fallopian tubes is called ovulation. Ovulation happens on the 14th day of the menstruation cycle The uterus is where the egg goes to after it travels through the fallopian tubes. The developing baby is held and nourished in the uterus. When the uterus is empty, it’s roughly the size of a fist but expands one an embryo starts to develop. The endometrium is the lining of the uterine wall. It’s used to protect the fetus. When the egg isn’t fertilized, menstruation ha...