Navigation Links
Embryo


Embryos (and one tadpole) of the wrinkled frog (Rana rugosa).
For musical bands with the name "Embryo" see Embryo (band)

An embryo (Greek: έμβρυον) is an animal or a plant in its earliest stage of development.

  • Plants: In botany, a plant embryo is part of a seed, consisting of precursor tissues for the leaves, stem (see hypocotyl), and root (see radicle), as well as one or more cotyledons. Once the embryo begins to germinate — grow out from the seed — it is called a seedling.
  • Animals: The embryo of vertebrates is defined as the stages between the first division of the zygote (a fertilized ovum) until it becomes a foetus. An embryo is called a foetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation.

See also

A chick embryo of thirty-three hours' incubation

External link


'"/>


(Date:10/31/2014)... 31, 2014 – Dr. John Schoggins , Assistant ... received a prestigious New Innovator Award from the National ... understand why bats can harbor numerous viruses without becoming ... over five years is one of 85 awards given ... NIH Common Fund. The New Innovator Awards were created ...
(Date:10/31/2014)... have been studying the behavior of approximately 300 ... years. They observed that ravens slowly build alliances ... However, they also observed that these affiliative interactions ... in about 50 % of the cases these ... affiliating ravens, intervening can be potentially risky when ...
(Date:10/30/2014)... is available in German . ... prompt our fellow humans to behave socially? This is ... in game theory. Previous studies assumed that it is ... scientists from the Max Planck Institute for Evolutionary Biology ... an influence on the cooperative behaviour of others. However, ...
Breaking Biology News(10 mins):UT Southwestern Microbiologist awarded prestigious NIH research grant 2Together we are strong -- or insufferable 2Together we are strong -- or insufferable 3Together we are strong -- or insufferable 4
... researchers at the University of Rochester Medical Center have discovered ... to harm the function of T-cells, which regulate the body's ... discovery adds insight to the latest trend in lead research, ... threat to understanding the long-term burden on the body, said ...
... successfully converted human embryonic stem cells into cartilage cells, ... grown for transplantation. , Cartilage is the dense connective ... movement of joints. , Research to be published ... embryonic stem cells to become cartilage cells. This could ...
... amateur fossil finder Van Turner discovered a small vertebra at ... the creature was unlike anything in the fossil record. Scientists ... of an extinct line of lizards with an evolutionary twist: ... the remains to paleontologists at the Dallas Museum of Natural ...
Cached Biology News:The dangerous legacy of lead 2Scientists use stem cells to grow cartilage 2Missing fossil link 'Dallasaurus' found 2Missing fossil link 'Dallasaurus' found 3Missing fossil link 'Dallasaurus' found 4
Other biology definitionOther Tags