[Popular Posts][6]

Science News
Tech news
Science Videos
Tech Gadgets
Funny
Calendar
Education News
Ted Talks
Favorite iPhone Apps
Edu Resource: Organization
EduSciTech Original
Teacher Tools
Fav YouTube Songs
EduSciTech Tips
featured
Free Apps
Tech Vidoes
World News
Education Tools
How To
My Reflections
Travel Photos
Web Resource
Photos
Inspirational
Ed Tools
EduScitech Videos
Health News
Travel
Cornell
Dinner Photo
Favorite Videos
Free app
Leadership
My videos
Tech Solutions
Connecticut
Food
Fun Tools
Fundraiser
Google Voice
Hartford
Hidden Gems
Hindi Song
Korean
Literacy
My Favorite Quotes
Picasa
Picnik
Reflections
Restaurant
Workshop
edu
favoriteiphoneapps
feedback process
iPad
iPhone Tips
improvement
philosophy
resource

Sperm in All Animals Originated 600 Million Years Ago - Yahoo! News




A gene responsible for sperm production is so vital that its
function has remained unaltered throughout evolution and is found in almost all
animals, according to a new study. The results suggest the ability to produce
sperm originated 600 million years ago.



The gene, called Boule, appears to be the only gene known to
be exclusively required for



"Our findings also show that humans, despite how
complex we are, across the evolutionary lines all the way to flies, which are
very simple, still have one fundamental element that's shared," said
Eugene Xu, assistant professor of obstetrics and gynecology at Northwestern
University Feinberg School of Medicine.



The discovery of Boule's key role in perpetuating animal
species offers a better understanding of
http://www.lifeslittlemysteries.com/why-isnt-there-a-male-birth-control-pill-...">male
contraceptive drug, and a new direction for future development of
pesticides or medicine to fight infectious parasites.



The study will be published July 15 in the journal PLoS
Genetics.



Sperm search



Prior to the new findings, scientists didn't know whether
sperm produced by various animal species came from the same prototype. In many
evolution scenarios, things develop independently. As an example, birds and
insects both fly, but the wings of each originated and evolved completely
independently.



For the study, Xu searched for and discovered the presence
of the Boule gene in sperm across different evolutionary lines: human, mammal,
fish, insect, worm and marine invertebrate. The search required sperm from a
sea urchin, a rooster, a fruit fly, a human and a fish.



The findings were unexpected because many sex-specific
genes, including other genes involved in sperm production, are usually under evolutionary
pressure to change.



"It's really surprising because sperm production gets
pounded by natural selection," Xu said. "It tends to change due to
strong selective pressures for sperm-specific genes to evolve. There is extra http://www.livescience.com/health/top10-bizarre-contraceptives.html">The
History and Future of Birth Control









  • http://www.livescience.com/php/video/">videos, http://www.livescience.com/php/trivia/archive.php/">Trivia & Quizzes and http://www.livescience.com/top10/">Top 10s. http://www.livescience.com/common/community/forums/">Join our community to debate hot-button issues like stem cells, climate change and evolution. You can also sign up for free http://livesciencestore.com/">LiveScience Store.



    How old is the gene that makes all sperms? 600 millions years apparently. Surprisingly evolution had no effect on the Boule gene.

    No comments:

    Post a Comment

    Start typing and press Enter to search