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More handpicked essays just for you.
Evidence for genetic and environmental contributions to individual intelligence
Evidence for genetic and environmental contributions to individual intelligence
Genetic factors affecting a person s intelligence
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According to the theory of Intelligent Design, Darwin’s ideas of evolution depend on random mutations presented by natural selection, these mutations are unsighted and sketchy, and these processes tend to harm organisms and in the end are incapable of benefitting the organisms in any way. Intelligent Design claims mutations often cause harm and do not construct complexity (Intelligent Design, 8), however, mutations are essential in understanding the role of each gene sequence because it allows us to observe functions of each gene and the result of changing the gene on the organism. Mutations help us figure out which genes control which trait. For example, if someone were to have six toes, we are then able to recognize the gene that controls …show more content…
The Pax gene is extremely important because it is responsible for the development of the eye and activating this gene in particular places can cause a mutation with eye growth. In a study with flies by altering the Pax 6 gene or the eyeless gene you are able to select where an eye will develop on the flies body. If the eyeless gene were turned on in the leg an eye would grow there (Shubin, 156). That is not the only amazing thing with this gene; the eyes that were formed also reacted with light. This is a major discovery for the way we look at eyes. The Pax 2 is also a very important gene in the development of our inner ear. If there is a mutation and this gene is deleted then the ear will not form properly (Shubin, 171). Interestingly Box Jellyfish do not have either the Pax 2 or Pax 6 genes. However, scientist noticed that the gene that forms the eyes in jellyfish is a mixture of both Pax 6 and Pax 2. Which makes this gene look like it could be a ancestor in a way (Shubin, 172). Although mutations in some sort can have a negative effect on organisms, they also provide survival skills that help them strive in their
The Dover Area School District of Dover, Pennsylvania is seeking approval from the General Assembly of Pennsylvania House to include the theory of intelligent design in the instruction of biology. Intelligent design, also known as I.D., is a theory that seeks to refute the widely-accepted and scientifically-supported evolution theory. It proposes that the complexity of living things and all of their functioning parts hints at the role of an unspecified source of intelligence in their creation (Orr). For all intents and purposes, the evidence cited by I.D. supporters consists only of the holes or missing links in evolutionary theory; it is a widely-debate proposal, not because ?of the significant weight of its evidence,? but because ?of the implications of its evidence? (IDnet).
The two different alleles present in the could be due to the effect of evolution and natural selection because the same can be found in chimps.4 The PV92 locus does not code for any protein but rather involves an Alu element that is 300-bp long. A person with the “+” allele would have the Alu element, making that sequence longer while those with the “-“ allele don’t have the element and would have a shorter sequence. This locus can be found on chromosome 16.3 There are multiple Alu sequences found among primate genomes but there are human specific sequences such as the one found on the PV92 locus.1 In the experiment, student DNA was collected from cheek cells and PCR was used to target the loci and amplify the region of DNA. In the taster gene, after amplification, a restriction digest was performed to differentiate between the two alleles. The digest was able to show differentiation because those with the “T” allele would have two bands from gel electrophoresis and those with “t” would have one band because the restriction enzyme doesn’t cut it.
Anyone with even a moderate background in science has heard of Charles Darwin and his theory of evolution. Since the publishing of his book On the Origin of Species by Means of Natural Selection in 1859, Darwin’s ideas have been debated by everyone from scientists to theologians to ordinary lay-people. Today, though there is still severe opposition, evolution is regarded as fact by most of the scientific community and Darwin’s book remains one of the most influential ever written.
In 1859, a biologist named Charles Darwin postulated a scientific theory, which stated that all living organisms evolved through a process of natural selection. According to Stephen Hawking, Charles Darwin claimed that the offspring of a particular species gradually evolved themselves genetically to resist the changes in the environment (573). The theory contended that the organisms could adapt to the changes in the environment through the survival of the fittest. Though this theory is regarded as a breakthrough in the field of biological evolution, it is interesting to explore how this seemingly scientific theory has been suitably modified, and intellectually applied to both negative and positive aspects of life.
One of the most controversial topics discussed in the world of medicine pertained to the topic of genetic engineering. Some doctors saw it as tool of world destruction, however many of them seeing it as a chance of potential cures and treatments. Charles Darwin first introduced this idea. In his first publication, The Origin of Species, he introduced the idea of survival of the fittest. He stated that evolutionary change was only possible due to the genetic variation between each generation, including the combination of different characteristics. In other words, he wrote that only those who had desirable characteristics, in terms of survival, would be able to pass down their genes. If two bred and possessed desirable characteristics, then the desirable characteristic would strengthen, modifying the genes. Darwin’s theories have been the base of many medical breakthroughs that contributed to genetic engineering. The idea soon influenced medicine, the idea of strengthening the healthy cells and isolating them from the unhealthy ones. The simple idea Darwin discovered had changed medicine as a whole. Today, doctors and scientists are able to manipulate genes in order to create new treatments and cures. Today, Darwin’s discovery changed and saved millions of lives around the world. Despite the fact that genetic engineering can have a negative impact on society, it was an important discovery due to the advancement in conventional medicine.
Genetic engineering has been around for many years and is widely used all over the planet. Many people don’t realize that genetic engineering is part of their daily lives and diet. Today, almost 70 percent of processed foods from a grocery store were genetically engineered. Genetic engineering can be in plants, foods, animals, and even humans. Although debates about genetic engineering still exist, many people have accepted due to the health benefits of gene therapy. The lack of knowledge has always tricked people because they only focused on the negative perspective of genetic engineering and not the positive perspective. In this paper, I will be talking about how Genetic engineering is connected to Brave New World, how the history of genetic engineering impacts the world, how genetic engineering works, how people opinions are influenced, how the side effects can be devastating, how the genetic engineering can be beneficial for the society and also how the ethical issues affect people’s perspective.
For a long time the human races have been leaving in a capsule in which it has been tough that we evolved from monkeys, but with all the technological advance and all the biology breakthrough, great scientists that use to support the theory of evolution and the science field in general have been force to confront an issue that the though they have resolved, the question of the origin of life. Due to the great amount of information like the irreducible complexity system, scientists had to go out looking for an answer to the crucial question of life, and many scientists have come to the same conclusion and result, the theory of evolution do not answer all the question, but what does it? The theory that can answer one of the most important questions in science is calling Intelligent Design. Although many people and scientists do not accept it as the correct answer, when scientists measured the evidence and actual facts of both of the theory is clear to the naked eye that the Intelligent Design provide more data and is more congruent with what science know in the present. Furthermore, Intelligent Design is the correct answer to the question of the origin of life.
On Christmas Day in the year 2001, I gave birth to a healthy baby boy. When I looked into the brand-new face of my son I saw a beautiful mystery. I wondered what kind of man my boy would grow to be and what his life would be like. There are those in the scientific community who would argue that my son's path was already determined at the moment of his birth, that his fate could be deciphered from his genetic make-up. As a nurturing mother I know better. At two years old my son has developed a more diverse vocabulary than many children twice or even three times his age. He recognizes many written words and reads them aloud. He is able to spell his name. He can distinguish a square from a rectangle and an octagon from a hexagon. Was he born with this knowledge? The answer is no. My son, as genetically gifted as he may be, could have been born into an environment in which his inborn potential was never developed. The knowledge he now possesses can be directly traced to the teaching environment in which he has grown. Human beings are a product of both their biology and their environment.
Genes are, basically, the blueprints of our body which are passed down from generation to generation. Through the exploration of these inherited materials, scientists have ventured into the recent, and rather controversial, field of genetic engineering. It is described as the "artificial modification of the genetic code of a living organism", and involves the "manipulation and alteration of inborn characteristics" by humans (Lanza). Like many other issues, genetic engineering has sparked a heated debate. Some people believe that it has the potential to become the new "miracle tool" of medicine. To others, this new technology borders on the realm of immorality, and is an omen of the danger to come, and are firmly convinced that this human intervention into nature is unethical, and will bring about the destruction of mankind (Lanza).
Charles Darwin has five parts to his theory of natural selection, firstly the “Geometric increase” which claims that “all living things reproduce in great numbers”, meaning that species may survive but not all will survive because, the resources used for survival for instance ,food will not be enough for all living things. “The struggle for existence” because there is a limited number of resources and can only sustain some and not all, not all living things will survive, however the question lies in which living being will survive?. “Variation” is the third part of natural selection which claims that within those living things there are variations within them that will determine whic...
With the studies that Charles Darwin obtained he published his first work, “The Origin of Species.” In this book he explained how for millions of years animals, and plants have evolved to better help their existence. Darwin reasoned that these living things had gradually changed over time to help themselves. The changes that he found seemed to have been during the process of reproduction. The traits which would help them survive became a dominant trait, while the weaker traits became recessive. A good example of what Darwin was trying to explain is shown in giraffes. Long-necked giraffes could reach the food on the trees, while the short-necked giraffes couldn’t. Since long necks helped the giraffes eat, short-necked giraffes died off from hunger. Because of this long-necks became a dominant trait in giraffes. This is what Charles Darwin would later call natural selection.
The DNA code, that forms our genes, was the missing key for Darwin to understand how things evolved. DNA does not stay the same, it can be changed by mutations. Mutations are needed to generate variations. Without the mutations things would stay the same generation after generation. Pieces of DNA called a switch can turn certain genes on or off. Genetic Switches helps to create mutations which are sometimes responsible for an entire new species spawning from another. This is how a snake can evolve from a four legged animal, and how a whale 's front flippers has bones inside that resembles
In their research article, “Genetic modification and genetic determinism”, David B. Resnik and Daniel B. Vorhaus argue that all the nonconsequentialist arguments against genetic modification are faulty because of the assumption that all the traits are strongly genetically determined, which is not the case. Resnik and Vorhaus dispel four arguments against genetic modification one-by-one. The freedom argument represents three claims: genetic modification prevents the person who has been modified from making free choices related to the modified trait, limits the range of behaviors and life plans, and interferes with the person 's ability to make free choices by increasing parental expectations and demands (Resnik & Vorhaus 5). The authors find this argument not convincing, as genes are simply not “powerful” enough to deprive a person of free choice, career and life options. In addition to that, they argue that parental control depends not on genetic procedure itself, but rather on parents’ basic knowledge of what the results of the modification should be. In a similar fashion, the giftedness arguments, which states that “Children are no longer viewed as gifts, but as
An inspection of the modern animal phyla will reveal that eyes are just as diverse as they are complex. Some organisms like the rag worm have pigmented cup eyes while other like he box jellyfish have two lens eyes and two pairs of pigment pit eyes. To account for the diversity in eye structure, we must first examine the eye ‘prototype’, the original structure that was acted upon by evolution. The simplest organ that can be considered an eye is composed of a single photoreceptor cell and a single pigment cell, without any lens or other refractive body (Arendt, 2003). Such organs are know as eyespots, and...
Another mechanism is a hereditable type of evolution is mutations. Mutations are alterations to a gene. Mutation can be harmful, beneficial or neutral. Mutations are the origin of the source of genetic diversity (9).Mutation that are harmful, hinders the chances of the organism chances of survival and are likely to die along with the mutations. Beneficial mutations increase the chances of the individual to survive in its environment, and they will be more likely to reproduce and pass on the gene to future generations (9).