quora
Nobody downloaded yet

Discuss how the molecular clock hypothesis (gene clock, evolutionary clock, or molecular clock) can be used to explain the diver - Essay Example

Comments (0) Cite this document
Summary
Discuss How the Molecular Clock Hypothesis (Gene Clock, Evolutionary Clock, or Molecular Clock) Can Be Used to Explain the Divergence of Species Name: Institution: Discuss How the Molecular Clock Hypothesis (Gene Clock, Evolutionary Clock, or Molecular Clock) Can Be Used to Explain the Divergence of Species In the last forty years, the molecular clock hypothesis was deemed an invaluable tool for the creation of evolutionary timescales…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER97.5% of users find it useful
Discuss how the molecular clock hypothesis (gene clock, evolutionary clock, or molecular clock) can be used to explain the diver
Read TextPreview

Extract of sample
"Discuss how the molecular clock hypothesis (gene clock, evolutionary clock, or molecular clock) can be used to explain the diver"

Download file to see previous pages This paper will discuss the manner in which the molecular clock hypothesis can be utilised to explain the divergence evident in species. The molecular clock hypothesis focuses on the idea that molecular evolution typically takes place at a roughly uniform rate over the course of time. The molecular clock bases its processes on the contention that to date the materialization of different species, it is assumed that the degree of molecular evolution is primarily homogeneous among duplicable proteins as well as species. The molecular clock, which focuses on the molecular clock hypothesis, refers to a system used in molecular evolution, which utilises fossil constraints, and the extent of molecular change achieved to foresee the time in geologic history when taxa diverged or two independent species diverged. In essence, the molecular clock approximates when key events such as radiation and speciation took place. The molecular information used to make these calculations primarily include nucleotide sequences for amino acid and DNA sequences in proteins (Ayala 1996, p. 11731). The molecular clock is also from time to time referred to as the evolutionary clock or gene clock. Rather than calculating hours, minutes and seconds, the molecular clock computes the extent of mutations and changes that build up within the genetic order of various species over time. This means that evolutionary biologists can take advantage of this data to conclude the method through which species evolve, and to construe the time when two species diverged, particularly with regard to the evolutionary timeline. The molecular clock is comparable to a normal wristwatch so as to appreciate how the molecular clock works in providing information on the divergence of species. Notably, while a wristwatch measures time from ticks, which are essentially regular changes in time (seconds), a molecular clock, on the other hand, measures time using random changes such as DNA mutations. The originators of the molecular clock, biologist Emile Zucherkandl and chemist Linus Pauling posit that the concept of the molecular clock centres on the notion that although genetic mutations take place rather randomly, they typically occur at a moderately constant rate. As a consequence, the number of differences noted between any two gene sequences continues to increase with time. This led to the conception that the degree of mutations within a certain DNA stretch can be used effectively to measure the time of species divergence (Britten 1986, p. 1394). However, similar to other clocks, the molecular clock also needs to be calibrated. Therefore, setting a molecular clock starts with known information such as the fossil record for a certain species. Subsequently, when the rate of mutation is ascertained, calculating the species’ divergence time becomes rather straightforward. For instance, if the rate of mutation in a certain species is five every millennium and 25 mutations exist in the species’ DNA, then it becomes quite clear that the species’ sequences diverged five million years ago. A prominent element of molecular clocks ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Discuss how the molecular clock hypothesis (gene clock, evolutionary Essay”, n.d.)
Retrieved de https://studentshare.org/biology/1466594-discuss-how-the-molecular-clock-hypothesis-gene
(Discuss How the Molecular Clock Hypothesis (gene Clock, Evolutionary Essay)
https://studentshare.org/biology/1466594-discuss-how-the-molecular-clock-hypothesis-gene.
“Discuss How the Molecular Clock Hypothesis (gene Clock, Evolutionary Essay”, n.d. https://studentshare.org/biology/1466594-discuss-how-the-molecular-clock-hypothesis-gene.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Compare and contrast The Big Clock with The Maltese Falcon
Directors sometimes change the title of the film and make it seem quite deviated from the original text or in order to make it inspirational. With the change in time and a huge acceptability of visual medium among the populace has also lead many writers to get a true inspiration from the kind of films that were being showcased within a particular span of time.
5 Pages(1250 words)Essay
Molecular biology cloning and Brachyury gene
Cloning entails the intensification of specific DNA segments, leading to the buildup of large amounts of similar DNA fragments, which may be utilized for numerous functions. Conventional molecular cloning uses tailored DNA cloning vectors, which are usually derived from spherical DNA molecules identified as bacterial plasmids.
4 Pages(1000 words)Essay
FedEx corporation and Bowmans strategy clock
The FedEx, the biggest delivery company of the United States of America followed the strategy options prescribed by Bowman to gain sustainability through the achievement of competitive advantages over the other firms of the industry.
7 Pages(1750 words)Assignment
Touch Screen Alarm Clock Marketing Plan
Considering the increasing demand of touch screen alarm clock as identified by Brandon (2010), our company will be introducing this product in the market and
8 Pages(2000 words)Term Paper
The Big Clock by Keneth Fearing
Stroud who is the main character is given the role of tracing a lost character. Stroud’s situation becomes dodgier as the plot of the tale develops and anxiety is heightened all through the story. This paper shall attempt to assess the Big Clock book evaluation by Kenneth Fearing.
5 Pages(1250 words)Book Report/Review
Mutagenesis and mapping of a mouse gene, clock essential for circadian behavior
Current molecular work with the Neurospora frequency and Drosophila period genes show that circadian cycles of frequency and period transcriptions, in that order, may
1 Pages(250 words)Article
Water clock
If they keep on sleeping they will lag far behind the world and hence fall short of the expectations that others and even their own selves have in them. One should believe that a
5 Pages(1250 words)Research Paper
Are U.S. CEOs overpaid
It is harder to measure the relative essence of the persons in an occupation, however. Most CEOs are top-notch intellectuals possessing advanced degrees from reputable universities in America and or elsewhere in the world. Besides, they have extensive working experience in busy organizations, where they have slowly built their career of leadership.
8 Pages(2000 words)Research Paper
Clock Manufacturing
There are thus two changes to the legal framework of the cuckoo clock industry of Austria that have been affected recently. In the first instance, a new technical standard has been introduced in 2005 to maintain the high reputation of Austrian cuckoo clock manufacturing industry.
10 Pages(2500 words)Essay
History of Java / History of CPU Speed (clock rate)
Over time, Java has been released as Java 1.0 and Java 2.0, and is used in different machines and applications, especially over Internet
1 Pages(250 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 Discuss how the molecular clock hypothesis (gene clock, evolutionary clock, or molecular clock) can be used to explain the diver for FREE!
logo footer
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us