Induction is an extrinsic process that depends on the position of a cell in the embryo. It is a process whereby one cell or group of cells can influence the […]
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CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Bindin and Its Receptors: Essential Proteins for Species-Specific Sperm-Egg Interaction in Sea Urchins
12. Successful fertilization in sea urchin demands specific interaction between proteins and receptors of sperms and eggs. In view of the above, which one of the following combinations is correct? […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Competence in Developmental Biology: Cells’ Ability to Respond to Inductive Signals
Which one of the following best describes the ability of the cells to respond to a specific inducing signal? (1) Potency (2) Equivalence (3) Competence (4) Specification In the realm […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Step-by-Step Sequence of Events During Sea Urchin Fertilization: From Sperm Attraction to Membrane Fusion
In case of sea urchin, which of the following is the correct sequence of events taking place during the interaction of sperm and egg? (1) Chemo-attraction of sperm to the […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Competence in Cell-to-Cell Communication During Development
12. Cell to cell communication is important in development of an organism. The ability of cells to respond to a specific inductive signal is called (1) Regional specificity of induction […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
How Resact Directs Sperm During Echinoderm Fertilization: The Key to Sperm Chemotaxis
In echinoderms sperm direction is provided by (1) Calcineuric (2) Bindin (3) Resact (4) EBRI Introduction to Sperm Chemotaxis in Echinoderms In echinoderms like sea urchins, fertilization happens externally, posing […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Role of Bindin Protein in Species-Specific Sperm-Egg Adhesion During Sea Urchin Fertilization
Species-specific adhesion of sperm to the egg during sea urchin fertilization, involves the interaction of the sperm adhesive protein (1) Bindin (2) Avidin (3) Fertilin (4) Cortical granule Introduction to […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Cytoplasmic Determinants in Embryonic Development
Certain proteins or mRNAs that are regionally localized within the unfertilized egg and regulate development are called (1) gene regulators. (2) morphometric determinants . (3) cytoplasmic determinants. (4) mosaic forming […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Function of Cortical Granules in Egg Cytoplasm: The Key to Preventing Polyspermy
8. The major function of cortical granules in cytoplasm of egg is to (1) Early block to polyspermy (2) Late block to polyspermy (3) Allowing meiosis to complete (4) Helping […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Specification and Determination in Animal Development
Following statements are being made regarding specification determination during animal development: A. During the course of commitment, the cell may not appear different from its nearest or most distant neighbors […]
