The following points highlight the four main developmental organs in vertebrates. The developmental organs are: 1. Brain 2. Eye 3. Heart 4. Kidney. Developmental Organ # 1. Brain: The first important morphogenetic change following gastrulation is the development of the central nervous system. The central nervous system starts as a simple tubular nerve tube which, in course of development, transforms [...]
The upcoming discuss will update you about the difference between spermatogenesis and oogenesis. Difference # Spermatogenesis: 1. Growth phenomena in nucleus and cytoplasm are not pronounced in spermatocytes. 2. Each spermatocyte produces four functional spermatids of equal size. 3. During maturation, (i) Nucleus remains small which may contract during spermiogenesis into a compact elongated mass, (ii) Nuclear fluid is small [...]
In this article we will discuss about:- 1. Meaning of Germ Cells 2. Development of Germ Cells 3. Migration 4. Fate 5. Transformation 6. Spermatogenesis 7. Oogenesis. Contents: Meaning of Germ Cells Development of Germ Cells Migration of Germ Cells Fate of Germ Cells Transformation of Germ Cells Spermatogenesis of Germ Cells Oogenesis of Germ Cells 1. Meaning of Germ [...]