HOME >> BIOLOGY >> NEWS
Gene study determines how humans are related to fruit flies and nematode worms

The most comprehensive genetic study to date concerning the evolutionary relationships among the three animal species whose genes have been completely sequenced--the human, the fruit fly, and the nematode worm--has determined that the human species is more closely related to the fruit fly than to the nematode. "We compared 100 genes that are common among these three species--the largest data set ever used to address this question--and obtained a result that is unambiguous," says S. Blair Hedges, an evolutionary biologist at Penn State, whose research team includes other scientists from Penn State and Japan.

"Cost estimates for acquiring the human genome alone range between 300 million and 3 billion," Hedges comments. "After spending all that money and effort, we now should at least be able to know for sure how these animals are related." These three species, which were singled out for the extensive genome effort, each represent much larger groups of animals: vertebrates are represented by humans, arthropods are represented by the fruit fly, and nematodes are represented by one species of nematode.

The results of the study by Hedges and his colleagues overturn a popular recent hypothesis, based primarily on the study of a single gene, and have important implications for research in fields such as medicine and developmental biology. The study, published in the current edition of the web-based journal BMC Evolutionary Biology, also is expected to impact the content of biology textbooks.

"About five years ago, the journal Nature published an analysis of one gene common to these three species that inexplicably persuaded many scientists to abandon the classic hypothesis of their relationships, which was based on the long-standing method of comparing structural similarities," Hedges says. The new hypothesis, named "Ecdysozoa," argued that fruit flies and nematodes are more closely related to each other than to humans. The classic hypothesis, na
'"/>

Contact: Barbara K. Kennedy
science@psu.edu
814-863-4682
Penn State
22-Apr-2002


Page: 1 2 3 4

Related biology news :

1. Student science contest participation influences study, career choices, alumni say
2. New study shows hope for treating inhalant abuse
3. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
4. Cigarette smoke causes breaks in DNA and defects to a cells chromosomes, Pitt study finds
5. New study indicates arsenic could be suitable as first-line treatment in type of leukaemia
6. Phase II trials of second-generation antisense cancer drug planned following successful early study
7. Preclinical safety study shows adipose-derived stem cells improve heart function after heart attack
8. Indiana University, EPA to study airborne PCBs
9. K-State, other universities to study how climate affects plant evolution
10. USC study links historical increases in life span to lower childhood exposure to infection
11. Washington University in St. Louis leads group studying aging process

Post Your Comments:
(Date:12/19/2014)... Dec. 18, 2014  23andMe, Inc., the leading personal ... that pinpoints fine-scale differences in genetic ancestry of individuals ... Since immigrants first arrived more than four ... has served as a meeting place for peoples ... and the ongoing mixing of peoples with African, European, ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and ... the addition of the "Samsung Galaxy S5 ... report to their offering. ... a totally different sensing technology than the iPhone ... fingerprint sensor in its product. The ...
(Date:12/17/2014)... NEW YORK , Dec. 15, 2014 /PRNewswire-USNewswire/ ... a Good Clinical Practices (GCP) audit to confirm ... Administration (FDA) regulations. This accomplishment enables HITLAB to ... trials utilizing the highest principles for patient safety ... to improve global healthcare access, quality, and delivery ...
Breaking Biology News(10 mins):23andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
(Date:12/19/2014)...   ISN has released its third annual ... publication series. With data aggregated from over eight ... within its online contractor management platform, ISNetworld, this three-part ... (KPI) statistics. The Contractor ... is available in two industry specific volumes: Oil ...
(Date:12/17/2014)... 16, 2014 “Never say, ‘I ... Universität Marburg’s Department of Physics, advises young women ... newly released SPIE Women in Optics 18-month ... shy to ask questions.” , In the annual ... mathematics) occupations ranging from university professor and laboratory ...
(Date:12/17/2014)... December 17, 2014 This report ... Quartz Tubing industry. For an overview analysis, the ... application, industry chain structure, industry overview, policy analysis, ... tubing industry has witnessed rapid development with ... of acquisitions. This report mentions quartz tubing upstream ...
(Date:12/17/2014)... , Dec. 16, 2014  Vermillion, Inc. (NASDAQ: ... on gynecologic disease, today announced the next step in ... premier bio-analytics solutions provider with the naming of current ... and Chief Executive Officer, while current Chairman of the ... to serve as Chairman. These changes are effective January ...
Breaking Biology Technology:ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 32020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4
Cached News: