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Progress zone

progress zone

An undifferentiated population of mesenchyme cells beneath the apical ectodermal ridge of the chick limb bud from which the sucessive parts of the limb are laid down in a proximo distal sequence.


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May I know something about embryo development

... about this undifferentiated mass of cells in what is known as the "progress zone." Coincidentially, to answer your question, the progress zone is directly beneath ...

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by kanzure
Sat Jul 07, 2007 1:07 am
 
Forum: Human Biology
Topic: May I know something about embryo development
Replies: 2
Views: 2557

Ligers and Tigons oh my!

... of Hybrids Hybrids like ligers[1] and tigons[2] that live in hybrid zones are less fit, but act as safeguards from extinction of pure species ... generates a safeguard, hybrids. Hybrid zones exemplify “evolution in progress” says Elaine Hoagland[4]. “You can go overboard in trying to freeze ...

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by Inuyasha
Tue May 10, 2005 9:55 pm
 
Forum: Zoology Discussion
Topic: Ligers and Tigons oh my!
Replies: 111
Views: 156163


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