An Essay On The "Rediscovery" Of Mendel's Work

1157 words - 5 pages

An Essay on the "Rediscovery" of Mendel's Work

Gregor Johann Mendel is widely considered as the founder of modern genetics as a result of his now famous pea plant experiments that were carried out between the years of 1856 and 1863. The experiments ultimately established the numerous rules of heredity that are referred to in genetics to this day (Nirenberg, n.d.). Additionally , he is known for coining the genetic terms "recessive" and "dominant" in an effort to refer to certain traits in the experiments, such as green peas being recessive and yellow ones dominant. His work was published in 1866 establishing the actions of "invisible" factors now known simply as genes in providing for visible traits in predictable ways. Mendel seemed to enjoy his accomplishments privately as his work was discovered three decades later by scientists conducting agricultural research. The scientists were: Erich Tschermak, Hugo de Vries, and Carl Correns who all independently verified Mendel's work leading to the "age of genetics" where we gained even more knowledge on genes and even DNA. (Nirenberg, n.d.).
Hugo Marie de Vries was a Dutch botanist and one of the first geneticists who started studying hybridization. Through his studies, he was convinced that traits were inherited as independent components. In 1893, he collected data from the hairy and hairless species of Lychnis and found that crossing both species resulted in the production of all hairy hybrids. In the following year however, he described that the F2 generation resulted in a 2:1 ratio of hairy: hairless plants. On the 26th of March 1900, at the Académie des Sciences, de Vries presented his paper "On the law of segregation in hybrids" in which he described hybridization in more than 80 species. This paper was remarkably similar to Mendel's as de Vries opted to use Mendel's terms of recessive and dominant as opposed to his usual terms of active and latent (Moore, 2001).
De Vries was studying the starchy and sugary fruits of corn but failed to mention the law of segregation and the 9:3:3:1 ratio in his studies. He did, however, elevate Mendel's discrete 3:1 ratio to a law by reporting the observations found which proved that 1/4 of the grains were sugary whereas 3/4 were starchy. However, this was an shift in paradigm for De Vries since he had never reported his F2 results in a 3:1 ratio nor thought in Mendelian terms. Following the 1900s, however, his work became more quantitative like Mendel's. His initial F2 ratio findings for Lychnis of 2/3 hairy:1/3 hairless then became 3/4 hairy:1/4 hairless when his work was published in 1900 even though the results were closer to a 2:1 ratio than a 3:1 ratio. Never did he give an explanation of his results, and his data was not substantial to lead him to the law of segregation as he mentioned that the F2 data was composed of different combinations and mixtures (Moore, 2001).
In 1897, he reported an 80:20 ratio for flower-color in Linaria...

Find Another Essay On An Essay on the "Rediscovery" of Mendel's Work

An essay on the causes of WWI

1806 words - 7 pages the seas. The British had introduced the 'Dreadnought', an effective battleship, in 1906. The Germans soon followed suit introducing their own battleships. The German, Von Schlieffen also drew up a plan of action that involved attacking France through Belgium if Russia made an attack on Germany.�The map below shows how the plan was to work. Germany would attack Belgium and defeat them within six weeks; this would gain them an access in

An Essay on A Vindication of the Rights of Woman

1084 words - 5 pages have not taken advantage of these rights, establishing themselves as equals to men within schools, at work, and in the home. In comparison to 1792, in which A Vindication of the Rights of Woman was written by Mary Wollstonecroft, women’s rights have vastly improved. In the time of Wollstonecroft, women were unwittingly oppressed by men for years through lack of education and operant conditioning that taught them to be nothing more than attractive

An Essay on the Constitution

1138 words - 5 pages petty disputes between states and a drop of American commerce internationally. Disgruntled merchants complained of the lack of regulation, while frustrated merchants fussed on the tariffs that were put on foreign goods. Plus, an executive was added to implement that laws made by congress. Formerly, congress would make laws that the states could simply ignore. Thence, the executive could use his power to make sure these laws were acted upon and

Essay on the life of Alan Turing and a discription of his life work

885 words - 4 pages after, he chose to study artificial intelligence and biological forms. He proposed a method called the Turing test, to determine whether machines had the ability to think. During World War II, Turing worked as a cryptographer for the British Foreign Office. In 1951, Turing was named a Fellow of the Royal Society and in 1952, he began to publish his work on the mathematical aspects of pattern and form development in living organisms. In 1954, he

This is an essay on "The Red Badge of Courage"

933 words - 4 pages actions are all child like. This shows the soldier's youth like side. Green is the subtle representation of the characters.In the novel the color black stand for danger. In the novel it says, "When the sunrays at last struck full and mellowingly upon the earth, the youth saw that the landscape was streaked with two long, thin, black columns which disappeared on the brow of a hill in front and rearward vanished in a wood. They were like two serpents

Smoking - an essay on the history and hazards of smoking

1741 words - 7 pages friend's or girl/boyfriend's influences.Another reason why people take up smoking is because of peer pressure leading to a quick physical addiction. One ingredient in cigarettes is nicotine, and it is extremely addictive. And yet nicotine is not the only physical reason people smoke, they are also get hooked on the taste, smell and the feel of cigarettes.Health Risks of SmokingAccording to the American Heart Association there are an estimated 50

An essay on the inuit of northern canada

2317 words - 9 pages great importance on territorial boundaries..LifeThe Sivullirmuit migration into the baron tundra immersed them into an environment the likes of which they had never seen. Rather than forest, rivers and ocean the Inuit now saw tundra, glaciers and, well, more tundra. The north bound Sivullirmuit were faced with new daily struggles for survival and had to learn and create new skills and technologies. As they migrated north they soon found sea and

Personal Essay: on Wanting to Work in the Public Sector

1284 words - 6 pages undoubtedly fired a passion and drive to work in the public sector. Making a difference on a local level can prove extremely rewarding. My degree and the skills I acquired My degree in Spanish Literature with French has allowed me to extensively develop not only language skills but learn how to effectively convey arguments and opinions. The composites of the degree were interdisciplinary and covered array of literary themes, genres and

This essay is critiquing the work of James Baldwin in his short writing "On the Painter Beauford Delaney ". It is a rhetoric analyisis of his work

558 words - 2 pages the light which "fell down from heaven". Baldwin further expands into the relation of such a light, being present in Delaney's artwork. Baldwin's essay takes the metaphorical meaning of the empowerment of light and connects it to the acclaimed work of Beauford Delaney.In Alaska the winter days are long, cold and dark. On some days it is only light out for three hours. Alaskans soon learn to be appreciative of the light they have. Baldwin remarks

An essay on the causes of the seperation of GB and the colonies of the Americas

600 words - 2 pages The relationship of the American colonists and the British monarchy had long been an unstable one. The colonists had suffered years of neglect as Britain went through a period of civil war. During this age of neglect, the American people were allotted a considerable amount of freedoms and self-government. However, when the political climate settled down in Britain, the new monarch felt the need to tightly control the colonies. The American

An essay on Jonathan Edward's speech "Sinners in the Hands of an Angry God."

824 words - 3 pages the arrow made ready on the string, and justice bends the arrow at your heart, and strains the bow, it is nothing but the mere pleasure of God, and that of an angry God, without any promise of obligation at all, that keeps the arrow one moment from being made drunk with your blood." I find that this symbolism is quite amazing, and actually stuck out to me above all other moments in the homily. Edwards is in essence saying that God has no trouble

Similar Essays

Rediscovery Of The Voice In Charlotte Bronte's Jane Eyre

744 words - 3 pages Jane Eyre:  Rediscovery of the Voice Jane has endured hell. Indeed, most of this novel becomes a test of what she can endure. Helen Burns and Miss Temple teach Jane the British stiff upper lip and saintly patience. Then Jane, star pupil that she is, exemplifies the stoicism, while surviving indignity upon indignity. Jane’s soul hunkers down deep inside her body and waits for the shelling to stop. Only at Moor’s End, where she teaches

The Long Road Once Forgotten: A Journey Of Rediscovery

738 words - 3 pages formulate a rudimentary plan that best suits their expected lifestyle. Investments are crucial. Most people buy houses and cars. Men must invest in diamond rings. People may want to purchase gold to turn a profit. LAC 101 delivers an in-depth study on these types and the many other methods of investment. The course teaches students when to buy, when to sell, how to negotiate, and how to detect if one can afford the investment. The class learns how to

The Effect Of Motivation On An Employee's Work Performance

1883 words - 8 pages The aim of this essay is to give an in depth explanation on the effect that motivation can have on an employees' commitment and performance at work. It will examine several different motivational theories and their criticisms. It will also look at how differing attitudes of an employee affect motivation. Finally it will examine how motivation is linked to commitment and performance at work. What is Motivation? Motivation can be described as

An Essay On Theater Of The Absurd

514 words - 2 pages An essay on Theater of the absurdThe issues involving Theater of the absurd has been a popular topic amongst scholars for many years. I find my self constantly drawn back to the subject of Theater of the absurd. While it is becoming a hot topic for debate, Theater of the absurd is not given the credit if deserves for inspiring many of the worlds famous painters. Since it was first compared to antidisestablishmentarianism much has been said