Origin and Evolution of Segmentation Essay (Article Review)

Exclusively available on Available only on IvyPanda® Made by Human No AI

Research Hypotheses

In the article, “Origin and Evolution of Segmentation”, the first hypothesis supports the independent segmentation in annelids, arthropods, and chordates. It expects minor similarities in the developmental processes within the groups. The second hypothesis supports segmentation similarities within the protostomes but considers chordates to have segmented independently. The hypothesis predicts variations in the segmentation processes of chordates and arthropods while expecting major similarities between annelids and arthropods. The hypothesis also predicts possibilities of discovering developmental or molecular vestiges of parent segments during the embryogenesis of some un-segmented phyla. In the last hypothesis, which supports homologous segmentation throughout the Bilateria, the authors predict collective similarities in the segmentation processes. Additionally, the hypothesis predicts possibilities of detecting evolution vestiges of organic ancestors.

Supporting Evidence

The researchers establish a logical pattern of assessment that identifies differences in the segmentation processes of organisms in a single clade. The first hypothesis predicts negligible similarities in the segmentation patterns of arthropods, chordates, and annelids. The prediction is tested using segmentation processes of insects and non-insect arthropods, which though related, vary at the pair-rule level. Although the tests between insects and non-insect arthropods show similarities in the expression of the engrailed, the variations at the pair-rule level necessitate further research to map pair-rule levels in non-insect segmentation. The second hypothesis is tested by assessing the segmentation processes of annelids, which differ in the segmentation patterns of some crustaceans despite following anterior-to-posterior progressions. Additionally, the expression of the engrailed gene shows inconsistencies between location of segmented cells and their functional role in the segmentation process. The test contradicts the second hypothesis of the similarity of segmentation processes of annelids and arthropods by citing insufficient evidence on segmentation processes of more basal annelid groups. The third hypothesis is tested using the segmentation processes of some vertebrates, which are compared with the processes of popular arthropods. The results show interesting similarities in the location of engrailed transcripts between chordates and other segmented organisms. Despite the significance of the similarities in predicting the homology of segmentation across the Bilateria, the article contradicts the hypothesis by terming the results as founded on isolated similarities. In fact, the article rejects the findings because researchers must concentrate on developing a balanced consideration rather than concentrating on biased similarities.

Research Conclusion

The researchers consider the current research insufficient to answer all questions on the origin and evolution of segmentation. In fact, the researchers argue that there is need to diversify research practices and test subjects before making any conclusion on segmentation patterns across different phyla. Although the article admits to the presence of surprising similarities between distantly related organisms, the researchers evoke the need to investigate the convergence of segmentation processes at the developmental mechanism level.

Article’s Key Points

The article aims at evaluating the similarities or differences between segmentation processes of different phyla. The article follows an inquisitive format without supporting or contradicting the existing hypotheses on the segmentation processes of different phyla. The article maintains the need to investigate the longstanding beliefs of common ancestry across Bilateria while retaining the recent developments on an independent segmentation. The researchers insist that the current research is insufficient to support any of the assumptions presented on the origin and evolution of segmentation. The issues presented in the research identify research gaps, which need to be addressed before making decisions on the origin and evolution of segmentation.

More related papers Related Essay Examples
Cite This paper
You're welcome to use this sample in your assignment. Be sure to cite it correctly

Reference

IvyPanda. (2022, April 13). Origin and Evolution of Segmentation. https://ivypanda.com/essays/origin-and-evolution-of-segmentation-article-by-davis-amp-patel/

Work Cited

"Origin and Evolution of Segmentation." IvyPanda, 13 Apr. 2022, ivypanda.com/essays/origin-and-evolution-of-segmentation-article-by-davis-amp-patel/.

References

IvyPanda. (2022) 'Origin and Evolution of Segmentation'. 13 April.

References

IvyPanda. 2022. "Origin and Evolution of Segmentation." April 13, 2022. https://ivypanda.com/essays/origin-and-evolution-of-segmentation-article-by-davis-amp-patel/.

1. IvyPanda. "Origin and Evolution of Segmentation." April 13, 2022. https://ivypanda.com/essays/origin-and-evolution-of-segmentation-article-by-davis-amp-patel/.


Bibliography


IvyPanda. "Origin and Evolution of Segmentation." April 13, 2022. https://ivypanda.com/essays/origin-and-evolution-of-segmentation-article-by-davis-amp-patel/.

If, for any reason, you believe that this content should not be published on our website, please request its removal.
Updated:
This academic paper example has been carefully picked, checked and refined by our editorial team.
No AI was involved: only quilified experts contributed.
You are free to use it for the following purposes:
  • To find inspiration for your paper and overcome writer’s block
  • As a source of information (ensure proper referencing)
  • As a template for you assignment
Privacy Settings

IvyPanda uses cookies and similar technologies to enhance your experience, enabling functionalities such as:

  • Basic site functions
  • Ensuring secure, safe transactions
  • Secure account login
  • Remembering account, browser, and regional preferences
  • Remembering privacy and security settings
  • Analyzing site traffic and usage
  • Personalized search, content, and recommendations
  • Displaying relevant, targeted ads on and off IvyPanda

Please refer to IvyPanda's Cookies Policy and Privacy Policy for detailed information.

Required Cookies & Technologies
Always active

Certain technologies we use are essential for critical functions such as security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and ensuring the site operates correctly for browsing and transactions.

Site Customization

Cookies and similar technologies are used to enhance your experience by:

  • Remembering general and regional preferences
  • Personalizing content, search, recommendations, and offers

Some functions, such as personalized recommendations, account preferences, or localization, may not work correctly without these technologies. For more details, please refer to IvyPanda's Cookies Policy.

Personalized Advertising

To enable personalized advertising (such as interest-based ads), we may share your data with our marketing and advertising partners using cookies and other technologies. These partners may have their own information collected about you. Turning off the personalized advertising setting won't stop you from seeing IvyPanda ads, but it may make the ads you see less relevant or more repetitive.

Personalized advertising may be considered a "sale" or "sharing" of the information under California and other state privacy laws, and you may have the right to opt out. Turning off personalized advertising allows you to exercise your right to opt out. Learn more in IvyPanda's Cookies Policy and Privacy Policy.

1 / 1