Extra-embryonic Membranes
Development of extra embryonic membranes During the development of chick and other vertebrates, there are produced certain tissues …
Embryology
Gastrulation: Definition, Types and Process of Gastrulation in egg
Definition According to “Balinsky”, the process of gastrulation is one of displacement of part of blastoderm of an …
Blastulation: Definition, Types and Process of Bastulation in egg
Definition: The repeated process of cleavage results in a heap of cohering, sticky blastomeres which are loosely arranged …
Cleavage: Definition, Charactertics and Patterns
Cleavage : After fertilization the activated zygote, cell passes through a series of mitotic cell division in a …
Egg: Structure and parts of Hen’s egg
Structure of Hen’s egg: The fully formed and newly laid fertilized egg of hen is a large elliptical …
Fertilization: Definition and Mechanism
Definition: It is a complex process. The union of the male and female gametes of same species is …
Difference between Spermatogenesis and Oogenesis
Spermatogenesis It takes place in testes. Growth phase is not significant and the primary spermatocyte becomes double the …
Oogenesis: Definition, Stages and Role of follicle and nurse cell in oogenesis
Oogenesis Oogenesis means the formation of egg take place in the ovary of female animal. During oogenesis the …
Spermatogenesis and Spermiogenesis
Spermatogenesis and Spermiogenesis The development of spermatozoa takes place in the male gonads called testes, which are paired …
Embryology: Definition and Concept
Embryology: Definition and Concept Definition: Embryology is a branch of science that is related to the formation, growth, …