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Embryo sac

Large oval cell in nucellus of ovule, in which fertilization of the egg cell and development of the embryo take place.


 embryo sac

(Science: botany) see embryonic.


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Evolution/creation of marsupium:

Is it possible to plant/incorporate an embryo on leech? http://www.safeproject.net/wp-content/uploads/2012/11/2012-11-28-16.44.091.jpg

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by enarees
Sat Sep 13, 2014 8:28 am
 
Forum: Zoology Discussion
Topic: Evolution/creation of marsupium:
Replies: 2
Views: 328

Recessive and dominant genetics - Pitx1 case study

... a question that is pretty basic but still stumping me (maybe from burning my eyes with endless hours of reading) Question: How would a mouse embryo differ from the ones pictured above if the scientists were able to modify the regulatory regions of the mouse Pitx1 gene to be similar to those ...

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by scienceguy914
Mon Sep 08, 2014 1:44 am
 
Forum: Genetics
Topic: Recessive and dominant genetics - Pitx1 case study
Replies: 0
Views: 427

Humans are Deuterostomes. Right?..

... becomes the anus, while the gut eventually tunnels through the embryo until it reaches the other side, forming an opening that becomes the ... Besides, that primitive groove is somehow connected to the yolk-sac by means of blastopore (again, wiki says). So how did blastopore end ...

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by Siroggak
Tue Aug 12, 2014 4:46 pm
 
Forum: Human Biology
Topic: Humans are Deuterostomes. Right?..
Replies: 1
Views: 395

Human Gamete Compatibility Going Backwards

... homologous gene from the second parent. In theory, if neither parent organism has any such genes, the organisms are "compatible". Once embryo is formed, the new genome will dictate appearance of a new organism (whether it's going to be a hoof or a hand). Unless there is a serious clash ...

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by Cat
Sat Jan 11, 2014 7:56 pm
 
Forum: Evolution
Topic: Human Gamete Compatibility Going Backwards
Replies: 9
Views: 4855

2minute animation of a chicken embryo developing. 21 days

... I have just completed but didn't have a file to post in the Share Your Work area. The PoultryCRC have just developed an animation of a chicken embryo to help those teaching embryology. Not only is it scientifically accurate but it is also very beautiful. I've put it up on YouTube so it can ...

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by TeachMWell
Wed Nov 20, 2013 10:36 pm
 
Forum: General Discussion
Topic: 2minute animation of a chicken embryo developing. 21 days
Replies: 0
Views: 738
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