When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was […]
Tag: CSIR NET Life Science PYQs and Solutions Basic Concepts of Development
CSIR NET Life Science PYQs and Solutions Basic Concepts of Development
No posts found.
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Specification of Tissue Lineages in Tunicate Embryos: Autonomous and Conditional Modes
When 8-cell embryo of tunicates is separated into 4 blastomere pairs and allowed to grow independently in culture medium, then each blastomere pair can form most the cell types; however, […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Intercellular Signaling and Fate Specification of the EMS Blastomere in Caenorhabditis elegans Embryos
C. elegans embryo uses both autonomous and conditional modes of specification. The following statement are about specification of cell lineages: (A) The signals from the P1 blastomere instructs the EMS […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Conditional Specification and Gene Regulation in the EMS Blastomere of Caenorhabditis elegans Embryos
The following figure represents the interaction between different blastomeres in a 4-cell stage of C. elegans embryo: The following statements were made regarding the above: A. The fate of […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Conditional Specification and Cell Fate in the 4-Cell Stage of Caenorhabditis elegans Embryos
C. elegans embryo uses both autonomous and conditional modes of specification. Conditional specification at the 4-cell stage can be seen in the development of the endoderm cell lineage and also […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Autonomous and Conditional Specification in Early Caenorhabditis elegans Embryos
A two-celled embryo is made of blastomeres A and B. If the two blastomeres are experimentally separated, the ‘A’ blastomere generates all the cells it would normally make. However, the […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Specification Patterns of AB and P1 Blastomeres in Early Caenorhabditis elegans Embryos
The zygote of C. elegans exhibits rotational cleavage. When the first two blastomeres formed (P1 and AB) are experimentally separated, the following outcomes may be possible: (A) The P1 cell […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Cell Fate Determination in Caenorhabditis elegans: Autonomous and Conditional Specification of Blastomeres
At the 2-celled stage of Caenorabditis elegans development the blastomeres were experimentally separated and allowed to proceed in development. One of the blastomere (P1) developed generating all types of cells […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Autonomous and Conditional Specification in Early Caenorhabditis elegans Embryo Development
During early cleavage of Caenorabditis elegans embryos, each asymmetrical division produces one founder cell which produces differentiated descendants and one stem cell. The very first cell division produces one anterior […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Example of Conditional Specification in Sea Urchin Embryo Development
If the blastomeres of a 4 celled sea urchin embryo are isolated each blastomere can form a pluteus larvae. This is example of (1) Autonomous specification (2) Conditional specification (3) […]
