Tag Archives | Living Organisms

Formation of Placenta | Embryology

In this article we will discuss about:- 1. Meaning of Placenta 2. Types of Placenta 3. Organogenesis 4. Functions. Meaning of Placenta: The embryo, specially in eutherian mammals, becomes implanted to the ute­rine wall. The process of implantation in­volves tissue interaction and establishment of connection between the uterine wall and the extraembryonic membranes. The region of attachment between the embryo­nic [...]

By |2016-10-13T19:29:47+00:00October 13, 2016|Embryology|Comments Off on Formation of Placenta | Embryology

4 Main Developmental Organs in Vertebrates | Embryology

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 [...]

By |2016-10-13T19:29:47+00:00October 13, 2016|Embryology|Comments Off on 4 Main Developmental Organs in Vertebrates | Embryology

Crossing Over in Genes within Chromosome | Genetics

In this article we will discuss about:- 1. Meaning of Crossing Over 2. Double Cross-Over 3. Cytological Basis 4. Cytological Evidence 5. Somatic Crossover 6. Different Theories on the Mechanism 7. Theories that Explain the Happenings 8. Chiasma Formation—the Theories 9. No Cross-over in Drosophila Males 10. Experi­mental Conditions. Contents: Meaning of Crossing Over Double Cross-Over Cytological Basis of Crossing [...]

By |2016-10-13T19:29:47+00:00October 13, 2016|Genetics|Comments Off on Crossing Over in Genes within Chromosome | Genetics
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