A group of six cells called ‘equivalence group cells’ divide to form the vulval structure in Caenorhabditis elegans. They are called so because (1) they have similar fates during development […]
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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
Formation and Role of the Blastocoel-like Cavity in Avian Embryo Development
67. In the avian embryo, the blastocoel-like fluid-filled cavity is formed between: (1) epiblast and hypoblast (2) hypoblast and yolk (3) primary hypoblast and secondary hypoblast (4) Koller’s sickle and […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Caenorhabditis elegans: The Prime Model Organism for Studying Cell Lineage
The model organism to study cell lineage is (1) Xenopus (2) Yeast (3) Caenorhabditis elegans (4) Drosophila Understanding how cells divide, differentiate, and form complex tissues is a central question […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Comparative Terms in Amphibian and Avian Embryonic Development: Blastocoel, Primitive Streak, and Organizer Equivalents
The early embryonic development in amphibians and aves serve as two different model plans of development. In the former the germ layer formation is initiated from a fluid-filled ball like […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
The First Organ System to Develop During Human Organogenesis: The Cardiovascular System
5 The first organ system to develop during organogenesis is the (1) Integumentary system (2) Respiratory system (3) Excretory system (4) Cardiovascular system Organogenesis—the process by which organ systems are […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Impact of Fgf8 Overexpression on Primitive Streak and Mesoderm Formation during Avian Gastrulation
65. The major structural characteristic of avian gastrulation is the primitive streak, which becomes the blastopore lips of amniotic embryos. Migration through the primitive streak is controlled by Fgf8. What […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Fusion of Precursor Cells: The Building Block of Skeletal Muscle Development
Fusion of precursor cells is an essential phenomenon in development of (1) Nerve (2) Skeletal muscle (3) Spleen (4) Liver Fusion of precursor cells, specifically myoblasts, is a vital and […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Key Events in Chick Embryogenesis: Cleavage, Hypoblast Formation, Primitive Streak, and Hensen’s Node
Following statements were made about the events occurring during chick development. A. The fertilized chick egg undergoes discoidal meroblastic cleavage; however the cleavage does not extend into the yolk cytoplasm. […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Decoding cAMP Signaling in Dictyostelium discoideum: Truths About Aggregation, Mutant Spores, and Key Enzymes
cAMP signalling plays a very important role in the development of Dictyosteliumdiscoideum. Below are few statements related to it. A. Every amoeba at the time of aggregation has the potential […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Hensen’s Node as the Avian Equivalent of the Amphibian Spemann Organizer: Axis Induction and Genetic Markers
Hensenis node is established as the avian equivalent of the amphibian dorsal blastopore lip. The following observations are presumed to be support of the same. A. It is the region […]
