In this article we will discuss about the gastrulation and the formation of primary organ rudiments in fishes. In fishes the yolk formed in the oocytes during oogenesis initially does not differ substantially from the yolk in amphibian oocytes and eggs. It consists of yolk platelets lying in the cytoplasm and intermingled with other cytoplasmic components (mitochondria and the like). [...]
In this article we will discuss about the gastrulation and formation of primary organ rudiments in fishes. In fishes the yolk formed in the oocytes during oogenesis initially does not differ substantially from the yolk in amphibian oocytes and eggs. It consists of yolk platelets lying in the cytoplasm and intermingled with other cytoplasmic components (mitochondria and the like). The [...]
In this article we will discuss about:- 1. Introduction to Metamorphosis in Amphibians 2. Causation of Metamorphosis in Amphibians 3. Tissue Reactivity 4. Induction. Introduction to Metamorphosis in Amphibians: In amphibians, metamorphosis is associated in typical cases with a transition from an aquatic to a terrestrial mode of life. Super-imposed on this change in environment, there is in the anurans [...]