Injection of Noggin mRNA in cells that will become the future ventral side of a frog embryo mimics the effect of an organizer graft to the ventral side. This experiment […]
Tag: Early Development in Animals
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CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Amphibian Early Embryonic Development: Nieuwkoop Center, Organizer Secretions, Neural Induction, and BMP Signaling
56. The following statements are made regarding the amphibian early-embryonic development: A. The Nieuwkoop center cells are mesodermal in origin. B. Chordin, Noggin and Goosecoid are secreted by the Organizer. […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Roles of Fibronectin, BMP Inhibition, Wnt Signaling, and Nodal Proteins in Amphibian Development: Migration, Neural Induction, and Patterning
Following statements are made regarding amphibian development: A. Fibronectin plays an important role in enabling the mesodermal cells to migrate into the embryo. B. Organizer secrete proteins that block the […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Key Principles of Amphibian Development: The Nieuwkoop Centre, Organizer Function, BMP Signaling, and Wnt in Neural Patterning
Which one of the following statements with respect to amphibian development is correct? (1) The organizer is itself induced by the Nieuwkoop Centre located in the dorsal most mesodermal cells. […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Dominant Negative GSK3 in Xenopus Ventral Cells: Induction of Secondary Axis and Role in Dorsal-Ventral Axis Formation
52. In Xenopus embryos, β-catenin plays an important role in the Dorsal/Ventral axis development. What would you expect if the endogenous glycogen synthase kinase 3 (GSK3) is knocked out by […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Dominant-Negative GSK3 Expression in Ventral Amphibian Embryos: Mechanism, Outcome, and Axis Duplication
51. The presence of β-catenin in the nuclei of blastomeres in the dorsal portion of the amphibian embryo is one of the determinants for laying down the dorso-ventral axis. What […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Vegetal Pole Localization of Germplasm in Amphibian Oocytes: Key to Primordial Germ Cell Segregation
In amphibian oocyte, the germplasm which gets segregated during cleavage to give rise to primordial germ cells (PGC’s) is normally (1) distributed evenly throughout the oocyte. (2) localized at animal […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Nieuwkoop Center in Amphibian Embryo: Function and Molecular Markers
49. The dorsal-most vegetal cells of the amphibian embryo that is capable of inducing the organizer is called as Nieuwkoop centre and is marked by the presence of (1) Chordin […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Amphibian Development: The Role of the Nieuwkoop Centre and β-Catenin
Which one of the following statements regarding amphibian development is correct? (1) The Nieuwkoop centre is formed on the dorsal side of the embryo due to accumulation of β-catenin which […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Spemann organizer: dorsal blastopore lip mesoderm cells organizing embryo
In the table below Column I lists terms related to development and Column II contains their descriptions not in a sequential manner. Select the option with all correct matches […]
