what is an embroyoid?

Question

genetic engineering!!

Answer 1

An embryo (Greek: έμβρυον) is a multicellular diploid eukaryote in its earliest stage of development.

In organisms that reproduce sexually, once a sperm fertilizes an egg cell, the result is a cell called the zygote that has all the DNA of two parents. In plants, animals, and some protists, the zygote will begin to divide by mitosis to produce a multicellular organism. The term embryo refers to the early stages of this development, after the zygote has divided at least once, but before the process has completed to produce the next stage of development.

In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of morula, blastula, and gastrula. This process involves the creating of a hollow sphere of cells in which three tissue layers develop. In plants. the process is not so standard. The stages of embryo development in plants is more dependent upon the kind of plant being produced.

Plants: In botany, a seed 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. Plants that do not produce seeds, but do produce an embryo include the bryophytes and ferns. In these plants, the embryo is a young plant that grows attached to a parental gametophyte.
Animals: The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. In humans, the embryo is defined as the product of conception from implantation in the uterus through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation. In other vertebrate animals, the embryo develops inside an egg. Invertebrate animals also develop from an embryo.
for more pl. visit:
http://en.wikipedia.org/wiki/Embryo

Answer 2

In biological terminology, the suffix "-oid" means "resembling", or "having the form of". Therefore an embryoid would be a cellular entity resembling or having the general form of an embryo, while not actually being an embryo.

Answer 3

In the culture and propagation of embryonic stem cells, dependent upon the culture conditions, you can get embryoid bodies. These are larger collections of adherent stem cells that have the potential to start differentiating into different types of determined cells. You can get several types of partially determined cells within the cell mass. They can continue to assemble into relatively macroscopic structures in culture.