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 […]
Author: admin
CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Comprehensive Insight into Anterior-Posterior Patterning Genes in Drosophila Embryo
The following statements were made regarding the patterning of anterior-posterior body plan of Drosophila: A. Microinjection of bicoid mRNA in the middle of a bicoid-deficient embryo leads to formation of […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Phenotypic Outcomes of Bicoid mRNA Injection in Wild Type and Mutant Drosophila Embryos
9. Three embryos, X (wild type), Y (mutant for bicoid) and Z (mutant for nanos) were injected with bicoid mRNA in their posterior pole at early cleavage stage. What would […]
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 Development Biology
Effects of Cytoplasmic Determinants on Anterior Structure Formation in Drosophila Embryo
Cytoplasmic determinants coding for anterior structure of Drosophila embryo if injected elsewhere in the recipient embryo, would lead to (1) normal development. (2) formation of additional ectopic head. (3) degeneration. […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Maternal Effect Genes Regulating Anterior Structures in Drosophila Embryo: The Role of Bicoid and Hunchback
Which of the following maternal effect gene products regulate production of anterior structures in Drosophila embryo? (1) Bicoid and Nanos (2) Bicoid and Hunchback (3) Bicoid and Caudal (4) Nanos […]
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 Development Biology
Role of the Dorsal Protein in Drosophila Dorsal-Ventral Axis Formation
One of the most important gene, involved in dorsal—ventral axis determination in Drosophila is dorsal. It codes Dorsal protein which (1) is taken up into the nuclei of cells and […]
