What is morula in embryology?

morula, solid mass of blastomeres resulting from a number of cleavages of a zygote, or fertilized egg. Its name derives from its resemblance to a mulberry (Latin: morum). A morula is usually produced in those species the eggs of which contain little yolk and, consequently, undergo complete cleavage.

How is a morula formed?

The morula is produced by a series of cleavage divisions of the early embryo, starting with the single-celled zygote (cytula). Once the embryo has divided into 16 cells, it begins to resemble a mulberry, hence the name morula (Latin, morus: mulberry).

What is the difference between blastocyst and morula?

Morula is a mulberry like solid mass of 8-16 cells called blastomeres formed by cleavage of zygote while the blastocyst is a hollow sphere of 64 cells formed by the rearrangement of blastornr. res of morula. It has a cavity called blastocoel and an inner cell mass within.

What happens at morula stage?

The Morula stage is a stage in the process of blastulation and occurs before the formation of the blastula. The Morula occurs after 3 – 4 days of fertilization of the egg by the sperm. Hence, it is one of the important steps in the process of embryo development and the later birth of a child.

Can a morula become twins?

This is a very rare birth of twins—a boy and a girl—from a single fresh compaction-morula produced by ICSI. We had to examine why there were two babies of different sex, which meant that it was a dizygotic twin pregnancy.

How long does it take for a morula to become a blastocyst?

around 1-2 days
After fertilisation, the zygote starts dividing (cleavage) by mitosis. The daughter cells are called blastomeres. The embryo with 8-16 daughter cells is called the morula. It takes around 1-2 days for morula to become a blastocyst after dividing.

Can one embryo split into a boy and a girl?

Conclusions. A single embryo transfer could produce different-sex twins.

Can 2 sperm fertilize the same egg?

Occasionally, two sperm are known to fertilize a single egg; this ‘double fertilization’ is thought to happen in about 1% of human conceptions. An embryo created this way doesn’t usually survive, but a few cases are known to have made it — these children are chimaeras of cells with X and Y chromosomes.