Following statements are made regarding animal development: A. The cell is first specified towards a given fate, suggesting that it would develop into this cell type, even in a neutral […]
Tag: Early Development in Animals
No posts found.
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Key Steps in Amphibian Gastrulation: Invagination, Involution, and Epiboly Explained
Which one of the following statements with respect to development in amphibians is correct? (1) Gastrulation begins with the invagination of bottle cells, followed by coordinated involution of the mesodermal […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Morphogenesis: The Crucial Role of Cellular Movements in Animal Development
23. Which one of the following developmental processes in animals is more dependent on cellular movements? (1) pattern formation (2) morphogenesis (3) cell differentiation (4) growth Introduction Development in […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Epiboly: The Coordinated Spreading of Epithelial Sheets During Embryonic Development
Movement of epithelial sheet spreading as a unit to enclose deeper layers of the embryo is termed as (1) Epiboly (2) Emboly (3) Involution (4) Ingression Introduction Embryonic development involves […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Typical and Atypical Cell Movements During Gastrulation
Which one of the following is NOT a typical movement pattern observed during gastrulation? (1) Involution (2) Epiboly (3) Furrowing (4) Delamination Introduction Gastrulation is a critical phase in embryonic […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Delamination: The Splitting of Cell Sheets During Hypoblast Formation in Bird Embryos
The splitting or migration or one sheet of cells into two sheets as seen during hypoblast formation in bird embryogenesis is termed as (1) delamination (2) ingression(3) involution (4) invagination […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Involution: A Key Morphogenetic Movement During Gastrulation
Inward movement of an expanding outer layer spreading over the internal surface during gastrulation is termed as (1) invagination (2) Ingression (3) involution (4) delamination Introduction Gastrulation is a major […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding the Embryonic Origin of Vertebrate Bones: The Role of the Mesoderm
Bones of vertebrates embryonic are derived from (1) ectoderm (2) epiderm (3) mesoderm (4) endoderm The bones of vertebrates during embryonic development are primarily derived from the mesoderm layer. The mesoderm, one […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Why Local hCG Production by the Blastocyst Is Essential for Human Embryo Implantation
14. Human chorionic gonadotropin (hCG) is known to facilitate attachment of blastocyst to uterus. In women with mutation in hCG gene, biologically inactive hCG was formed but implantation occurred. When […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
The Essential Role of Actin Filaments and Cofilin1 in Embryonic Compaction and Blastula Formation
Compaction during early embryonic development involves activation of actin filaments. Which one of the following inhibitors would prevent formation of the blastula from the morula? (1) An inhibitor that would […]
