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Embryology

Extra-embryonic Membranes

Development of extra embryonic membranes During the development of chick and other vertebrates, there are produced certain tissues …

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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 …

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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 …

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Cleavage: Definition, Charactertics and Patterns

Cleavage : After fertilization the activated zygote, cell passes through a series of mitotic cell division in a …

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Egg: Structure and parts of Hen’s egg

Structure of hen egg

Structure of Hen’s egg: The fully formed and newly laid fertilized egg of hen is a large elliptical …

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Fertilization: Definition and Mechanism

Definition: It is a complex process. The union of the male and female gametes of same species is …

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Difference between Spermatogenesis and Oogenesis

Spermatogenesis It takes place in testes. Growth phase is not significant and the primary spermatocyte becomes double the …

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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 …

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Spermatogenesis and Spermiogenesis

Spermatogenesis and Spermiogenesis The development of spermatozoa takes place in the male gonads called testes, which are paired …

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Embryology: Definition and Concept

Embryology: Definition and Concept Definition: Embryology is a branch of science that is related to the formation, growth, …

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