After 8 weeks
In short, an embryo undergoes both cellular division and cellular differentiation to become a fetus. This is achieved by the genetic program present in the cell(s) which controls both mentioned processes. It is the stage of developing mammal.After 9th week of fertilisation,the embryo can be called foetus.
Not capable of living or developing: a nonviable fetus.
Embryo, between the 3rd and 8th week. Fetus, after the 8th week
A zygote is the union of two gametes, prior to the embryonic stage of a developing embryo and fetus.
Once the zygote becomes an embryo it starts developing all of its organs, nervous system etc. then after 8 weeks of development everything is there so it becomes a fetus, and the fetus just grows bigger.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
After the 8th week, the embryo is called a fetus.
In short, an embryo undergoes both cellular division and cellular differentiation to become a fetus. This is achieved by the genetic program present in the cell(s) which controls both mentioned processes. It is the stage of developing mammal.After 9th week of fertilisation,the embryo can be called foetus.
Fetus zygote is not the term to use. A zygote is a fertilized egg. An embryo is a developing baby. A fetus is a baby before it is born.
Fetus zygote is not the term to use. A zygote is a fertilized egg. An embryo is a developing baby. A fetus is a baby before it is born.
The protective sac around the embryo or fetus is the amniotic sac.
In the seventh week of the embryo's development
Fetus
Not capable of living or developing: a nonviable fetus.
In humans, the embryo becomes the fetus at the beginning of the 11th week in gestational age (the 9th week after fertilization). This stage starts when the major structures have formed.
zygote, blastocyst, fetus, embryo
Gene combination and their expression in the embryo