The following statements regarding the generation of dorsal/ventral axis in Drosophila was made: A. Gurken protein moves along with the oocyte nucleus and signals follicle cells to adopt the ventral […]
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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 Basic Concepts of Development
Impact of GSK-3 Inhibition on β-Catenin Nuclear Accumulation and Cell Fate in Sea Urchin Embryos
34. During normal development of sea urchin, β-catenin accumulates predominantly in the micromeres, which are fated to become endoderm and mesoderm. If GSK-3 is blocked in the developing embryo: (1) […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Sea Urchin Micromere Transplantation: Formation of Skeletogenic Mesenchyme Cells Through Ingression
33. In a given experiment, transplantation o micromeres from the vegetal pole of a 16-cell sea urchin embryo onto the animal pole of a host 16-cell sea Urchin embryo would […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Regulation of Anterior-Posterior Compartments in Drosophila Segments by Wingless and Engrailed Genes
The anterior-posterior compartment of each segment of Drosophila is defined by wingless and engrailed genes. The following statements are given towards explaining their regulation: A. Wingless is a secretory factor […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Effects of Wingless RNAi Expression in Developing Drosophila Embryos: Implications for Segmental Patterning
What will happen if wingless RNAi is expressed in wingless expressing cells from the stage when this gene initiates its expression in a developing Drosophila embryo? A. The enhanced expression […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Autonomous and Conditional Specification in Tunicate Embryonic Development
When the 4 blastomere pairs of the 8-cell stage tunicate embryo are dissociated, each forms most of the structures it would have formed had it remained in the embryo. However, […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Maintenance of Engrailed and Wingless Expression in Drosophila: Key Molecular Mechanisms
The continued expression of engrailed and wingless is maintained by interactions between the Engrailed- and Wingless-expressing cells. The following statements are given towards the initiation of the cascade of events […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Sea Urchin Embryo Development: Cellular Potency and Axis Formation
31. Which one of the following about development of sea urchin embryos is TRUE? (1) Each blastomere of a 4-cell stage possesses a portion of the original animal-vegetal axis and […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Understanding Anterior and Posterior Compartment Development in Drosophila Segments
The following are statements regarding the development and maintenance of anterior and posterior compartments in each segment of Drosophila: A. Expression of wingless and engrailed is activated by pair-rule genes […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Driesch’s Pressure Plate Experiment Reveals Equipotentiality and Potency in Sea Urchin Embryos
Dreisch performed the “pressure plate experiment” to alter the distribution of nuclei in a 8-cell sea urchin embryo. He obtained normal larvae from these embryos. Following possible conclusions could be […]
