Embryogenesis
hideEmbryogenesis (compound of the Greek: εμβρυο-γένεσις "embryo-genesis") is the process by which the embryo is formed and develops. It starts with the fertilization of the ovum (or egg) which, after fertilization, is referred to as a zygote. The zygote undergoes rapid mitotic divisions with no significant growth (a process known as cleavage) and cellular differentiation, leading to development of an embryo. It occurs in both animal and plant development, this article addresses the common features among different animals.
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News tagged with embryonic development
Deciphering the regulatory code: Scientists take new approach to predict gene expression
Nov 04, 2009 |
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Embryonic development is like a well-organised building project, with the embryo's DNA serving as the blueprint from which all construction details are derived. Cells carry out different functions according ...
Unraveling the mechanisms behind organ regeneration in zebrafish
Nov 02, 2009 |
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The search for the holy grail of regenerative medicine -- the ability to "grow back" a perfect body part when one is lost to injury or disease -- has been under way for years, yet the steps involved in this ...
Possible origins of pancreatic cancer revealed
Nov 02, 2009 |
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(PhysOrg.com) -- MIT cancer biologists have identified a subpopulation of cells that can give rise to pancreatic cancer. They also found that tumors can form in other, more mature pancreatic cell types, but ...
Spare gene is fodder for fishes' evolution
Sep 03, 2009 |
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Scientists have suspected that spare parts in the genome—extra copies of functional genes that arise when genes or whole genomes get duplicated -- might sometimes provide the raw materials for the evolution ...
Of cyclops and lilies: New strategy for the synthesis of cylcopamine, a potential cancer treatment
Aug 07, 2009 |
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(PhysOrg.com) -- In 1957, shepherds in Idaho (USA) discovered that when pregnant sheep ate lilies of the species Veratrum californicum (corn lily, California false hellebore), their lambs were born with only one eye in the ...
Discovery of genetic toggle switch inches closer to possible diabetes cure
Jul 20, 2009 |
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Scientists have identified a master regulator gene for early embryonic development of the pancreas and other organs, putting researchers closer to coaxing stem cells into pancreatic cells as a possible cure ...
Scientists find molecule that regulates heart size by using zebrafish screening model
Jul 05, 2009 |
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Using zebrafish, researchers at the University of Pittsburgh have identified and described an enzyme inhibitor that allows them to increase the number of cardiac progenitor cells and therefore influence the size of the developing ...
Uncovering how cells cover gaps (w/ Video)
Jun 26, 2009 |
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Researchers at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, came a step closer to understanding how cells close gaps not only during embryonic development but also duringwound healing. ...
Scientists identify gene vital to early embryonic cells forming a normal heart and skull
Jun 16, 2009 |
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New research from Cincinnati Children's Hospital Medical Center highlights the critical role a certain gene and its protein play during early embryonic development on formation of a normal heart and skull.
Model for new generation of blood vessels challenged
Jun 01, 2009 |
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In-growth and new generation of blood vessels, which must take place if a wound is to heal or a tumor is to grow, have been thought to occur through a branching and further growth of a vessel against a chemical gradient of ...
For different species, different functions for embryonic microRNAs
May 15, 2009 |
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(PhysOrg.com) -- When evolution has lucked into efficient solutions for life’s most fundamental problems, it adopts them as invaluable family heirlooms, passing them down as one species evolves into another. ...
Discovery of facial malformation gene
May 15, 2009 |
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(PhysOrg.com) -- The first specific genetic mutation which can cause a potentially serious facial disfigurement has been identified by researchers at Oxford University. The finding, published online in the ...
Last step leading to blood cell formation elucidated
Apr 01, 2009 |
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A team of scientists led by Dr. Timm Schroeder of Helmholtz Zentrum Muenchen, Germany, has proved the existence of hemogenic endothelial cells. The findings answer the question -- unsolved until now -- of how blood cells ...
What drove the cow mad? Lessons from a tiny fish
Mar 10, 2009 |
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For over twenty years, scientists have known that a normal protein in the brain, PrP, or prion protein, can turn harmful and cause deadly illnesses like Creutzfeldt-Jakob disease (CJD) in humans, and bovine spongiform encephalopathy ...
Developing fruit fly embryo is capable of genetic corrections
Mar 10, 2009 |
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Animals have an astonishing ability to develop reliably, in spite of variable conditions during embryogenesis. New research, published in parallel this week in PLoS Biology and PLoS Computational Biology, ...
