Nobody downloaded yet

Retelling Experiments H,B,D, Kettlewell's Studies of Industrial Melanism in Peppered Moths - Essay Example

Comments (0) Cite this document
Summary
It is well-acknowledged in the scientific world that Darwin's 'Origin of Species' was the first major overture humanity presented of evolutionary patterns observable in life forms on Earth. A century after this major event, British ecological geneticist H.B.D…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER93.2% of users find it useful
Retelling Experiments H,B,D, Kettlewells Studies of Industrial Melanism in Peppered Moths
Read TextPreview

Extract of sample "Retelling Experiments H,B,D, Kettlewell's Studies of Industrial Melanism in Peppered Moths"

Download file to see previous pages Hagen reports further that Kettlewell himself added to the controversies through his defense to these criticisms, sidelining his own singular achievements in these first attempts at understanding survival patterns in the peppered moths. This summary endorses his views tentatively and sets out to describe Kettlewell's experiments in the most likely manner.
The papered moth (Biston betularia) is almost a mythical creature in evolutionary biology today because it helped practitioners solve an important mystery in evolution. The moth, an endemic species to Great Britain and other parts of Europe, is known to have existed in three broad phenotypes. Before the industrial revolution of the 19th century the moth, popularly ascribed later as the typical phenotype, had grayish white wings flecked with small dark spots (Hagen, 1999, p. 144). Later on, with the growth of industry and increasing pollution, especially the aerial variety from coal dust in flues, in the surrounding areas this light-winged typical variety became less and less evident and moths with darker wing colors became more manifest. The more frequent appearance of this dark phenotype (Biston carbonaria), especially in wooded regions near industrial areas, raised questions among biologists who sought to explain their strange manifestation.
It is significant to note here that the carbonaria has thoroughly dark wings while intermediate varieties with varying degrees of darkness in the wing colors, Biston insularia, have been increasingly observed since the time of Kettlewell's first experiments in an wooded area near the industrial town of Birmingham (Cook and Grant, 2000).
The carbonari and insularia phenotypes are popularly known as melanics, because of their darker wings, and they evolve from activation of separate alleles available at the same locus as the typical phenotype gene, construed to be the original one (Cook and Grant, 2000).
Kettlewell's Experiment:
Before setting out on his first observational experiments in the woods near Birmingham, Kettlewell had already settled upon a theory in explanation of the strange higher incidence of the melanic varieties over the typical ones in that experiment area (Hagen, 1999, p.146). The first experiment here lasted for 11 days. The environment was mixed with birch and oak trees. While the birches had relatively lighter trunk colors the oak trees tended to have trunk colors darkened with soot from the neighboring industrial regions (Hagen, 1999, p. 146). Kettlewell reported all three phenotypes of the moths existing at the site. The typical ones tended to merge with the lighter colored birches while the melanics tended to do so on the darker oak trunks. For Kettlewell, the selection hypothesis suggested that the numbers of melanics would be ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Retelling Experiments H,B,D, Kettlewell's Studies of Industrial Essay”, n.d.)
Retrieved from https://studentshare.org/miscellaneous/1525274-retelling-experiments-hbd-kettlewells-studies-of-industrial-melanism-in-peppered-moths
(Retelling Experiments H,B,D, Kettlewell'S Studies of Industrial Essay)
https://studentshare.org/miscellaneous/1525274-retelling-experiments-hbd-kettlewells-studies-of-industrial-melanism-in-peppered-moths.
“Retelling Experiments H,B,D, Kettlewell'S Studies of Industrial Essay”, n.d. https://studentshare.org/miscellaneous/1525274-retelling-experiments-hbd-kettlewells-studies-of-industrial-melanism-in-peppered-moths.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Retelling Experiments H,B,D, Kettlewell's Studies of Industrial Melanism in Peppered Moths

International business: H&B LLC Company case

...?International Business Introduction H&B LLC Company based in the United s was opened in 2001. The company deals with the sale and purchase of precious metals products most of which are made of gold, silver, gems, and ruby. The company is privately-owned and initially, it had only nine stores. Currently, the company boosts of over 50 stores within the United States. H&B LLC has tremendously grown since its inception and the company’s strong management team is credited for the remarkable growth. The company seeks to expand its customer base and to improve its brand image in overseas markets including the Kingdom of Saudi Arabia (KSA). Choice of the...
4 Pages(1000 words)Assignment

The Life of D. H. Lawrence

...?The Life of D. H. Lawrence (DH Lawrence) “Even today, more than 70 years after his death, Lawrence remains an enthralling figure. Hailed as a geniusby some, labelled an out-of-fashion misogynist by others, he's probably best known for his novels Sons and Lovers and Lady Chatterley's Lover”(DH Lawrence: celebrating a literary life). David Herbert Richards Lawrence was one of the greatest English literature writers during the initial half of the twentieth century. Apart from being a great novelist, DH Lawrence was also a poet, play righter, essayist, literary critic and painter. Even though he was not against industrialization, he warned the public about the dangers associated with...
6 Pages(1500 words)Term Paper

Labs H, P, & S

..., and the rest of the experimental arrangement moved near the edge of the table. The pins were then sighted through the glass plate, and ruler aligned along the sightline and a straight line drawn along the rule and labeled B’R. The glass plate was again removed, and line BB’ drawn. The Normals at B and B’ were drawn, and angles of incidence and refraction compared. SKETCH: I N B B’ RESULTS: Trial I-B-N (Angle of incidence) R-B’-N (Angle of refraction) 1 60 34 ANALYSIS AND CONCLUSION From the above table it can be seen that the angle of incidence is greater than the angle of refraction. Therefore, this experiment...
3 Pages(750 words)Lab Report

Hawthorne Studies and Experiments

...by anyone. The dedication for work came from within and this was the most crucial and imperative part for the success of the Hawthorne Experiments. (Human Relations Contributors) These experiments have given birth to the "Hawthorne Effects" and "human relations movements" in industrial world. A spark of revolution was ignited in the fields of organizational behavior, ergonomics and industrial and organizational psychology and Hawthorne Studies came in existence (Bramel, D and Friend, R). Despite initial accomplishments Hawthorne Studies on social influences in the workplace have weathered decades of scholarly attack....
12 Pages(3000 words)Book Report/Review

Legal Studies and Industrial Relations

...but in the long-term, an amendment could be very well considered. The rationale here is the expansion of Sydney's nightlife and the injection of variety into it. In other words, legislative reforms pertaining to the hospitality industry are based on economic considerations and not just political ones. Creagh, S. (2007, 24 Oct.) Council wants power to curb pokies. Sydney Morning Herald. Gambling may be a source of significant profits for the hospitality industry but it is a source of tremendous social problems for countless people, not to mention society at large. At the present moment, council do not have the authority to discriminate against gambling establishments or hotels...
11 Pages(2750 words)Essay

H-D Strategic Audit

...of defects in its products by stepping up development activities. One of the most important factors of any company is the financial assets & liabilities of the company. IF we look at the consolidated figures of HD (Exhibit 5 B), we will find that the while the net identifiable assets of HD have risen by 47%, the corresponding figures for the depreciation and the Capital expenditures has been 35% and 75% respectively within a gap of 2 years in the recent past (between 1999 and 2001). The major cause of concern in this regard is therefore, the rise in the net capital expenditures, which is a point that requires thought. The motorcycle market generally comprises four main...
9 Pages(2250 words)Essay

H

... How to Clean Lungs after Quitting Smoking HISTORY Leadership Slavery Politics Assassination President Colonization Hegemony Independence Loyalty Liberation Politicians JOBS Cooking Fishing Journalism Nursing Medicine Teaching Hairdressing Carpentry Weaving Sporting HABITS Drug abuse Smoking Drinking alcohol Stealing Robbery Sleeping Eating Crying Bullying Sagging How to Clean Lungs after Quitting Smoking Everyday smokers always subject their lungs to scarring. This is an effect of smoking that come as a result of long term exposure of the cigarette smoke. This leads to reduced oxygen supply to the body tissues. There are many ways that affected people can naturally detoxify their lungs and live a healthy life after quitting... How to Clean...
2 Pages(500 words)Assignment

Self-Forgiveness by Frank D Fincham and Julie H Hall

...Self-Forgiveness by Frank D. Fincham and Julie H. Hall. This paper is a journal article review critically analysing the article "Self-Forgivenes: the Stepchild of Forgiveness Research," which was published in the Journal of Social and Clinical Psychology in 2005. The article was written by Frank D. Fincham and Julie H. Hall. The first session of the review will a brief summary of the journal, the second part will offer a reflection of the article, that is, my initial response to the article regarding its study design, key insights gained from the article, what makes the article interesting and any other readings that I might plan to do based upon have read the article, and the final part will discuss how the information gained... the father...
5 Pages(1250 words)Article

D. H. Lawrence, Selected Stories

...: Harvester, 1978. Print. Lawrence, D. H. “The White Stocking” in The Prussian Officer and Other Stories, March 17, 2014. Web. November 5, 2014 < https://ebooks.adelaide.edu.au/l/lawrence/dh/prussian/chapter9.html> Lawrence, D. H. The Prussian Officer. London: Duckworth & Co, 1914. Web. November 5, 2014 < http://www.gutenberg.org/files/22480/22480-h/22480-h.htm> Harrison, Andrew. D. H. Lawrence and Italian Futurism: A Study of Influence. Amsterdam: Rodopi, 2003. Print. Philipse, Herman. Heideggers Philosophy of Being: A Critical Interpretation. Princeton University Press, 2001. Print. Englander,...
18 Pages(4500 words)Coursework

S. B. Cottone Inc

...with higher price of heating equipment, and also represent a company offering similar equipment that has a lower price. S. B. Cottone applied this approach with fire dampers. Lloyd Industries offered lower price while Prefco Products offered higher price for the same product line. Upon investigation of sales and inventories, products to be phased out are ceiling fans as sales are low and to ease up the cash tied up with inventory. Products to be added are fire protection equipments that are needed by buildings all year round. Company should nurture available means to transmit information to buyers. One common practice is thru social media, advertisements, and the e-marketing...
7 Pages(1750 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Retelling Experiments H,B,D, Kettlewell's Studies of Industrial Melanism in Peppered Moths for FREE!

Contact Us