Tag Archives | Embryology

Cleavage: Definition and Patterns | Fertilization | Embryology

In this article we will discuss about:- 1. Definition of Cleavage 2. Chemical Changes during Cleavage 3. Patterns 4. Nuclei of Cleavage Cells 5. Morula and Blastula. Definition of Cleavage: One of the peculiarities of sexual reproduction in animals is that the complex multicellular body of the offspring originates from a single cell—the fertilized egg. It is necessary, therefore, that [...]

By |2018-04-30T10:44:14+00:00April 30, 2018|Cleavage|Comments Off on Cleavage: Definition and Patterns | Fertilization | Embryology

Maturation of the Egg | Oogenesis | Gametogenesis | Embryology

In this article we will discuss about the process of maturation of eggs in the female gamete. After the oocyte completes its growth, it is ready for the reduction divisions. By this time, the chromosomes of the oocyte have reached the stage of diakinesis. The meiotic division in the female gametes cannot, however, proceed in the same way as in [...]

By |2018-04-30T10:44:14+00:00April 30, 2018|Embryology|Comments Off on Maturation of the Egg | Oogenesis | Gametogenesis | Embryology

Fate Maps of an Embryo | Animals | Embryology

A correct interpretation of gastrulation is impossible without a knowledge of the position which the presumptive germinal layers occupy in the blastula. This position may be ascertained in various ways. A chart, showing the fate of each part of an early embryo, in particular, a blastula, is called a fate map. In tracing the fate of various parts of the [...]

By |2018-04-30T10:44:14+00:00April 30, 2018|Embryology|Comments Off on Fate Maps of an Embryo | Animals | Embryology
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