In this article we will discuss about the Gametogenesis:- 1. Meaning of Gametogenesis 2. Origin of Gametogenesis (Primordial Germ Cells). Meaning of Gametogenesis: There are two types of reproductive cells called gametes — the spermatozoa in males and ova in females. These reproductive sex cells and the cells that give rise to them are called germplasm. On the other hand, [...]
In this article we will discuss about the Placenta:- 1. Meaning of Placenta 2. Types of Embryonic Tissues Involved in Placentation 3. Function. Meaning of Placenta: In mammals although the fertilized ovum develops in the body of the mother, the extra embryonic membranes are formed in similar fashion like that of the birds. The extra-embryonic somatopleure contributes to the formation [...]
In this article we will discuss about the Fate Map of an Egg:- 1. Meaning of Fate Map 2. Construction of Fate Map 3. Vertebrates 4. Usefulness. Meaning of Fate Map: A fate map is a diagram of an egg or blastula, indicating the fate of each cell or region, at a later stage of development. Fate maps are essential [...]