The pattern of embryonic cleavage specific to a species is determined by two major parameters. (A) The amount and distribution of yolk protein within the cytoplasm. (B) The factors in […]
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CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Origin of Embryonic Stem Cells in Mammals: The Inner Cell Mass
The embryonic stem cells in mammals are derived from: (1) Blastocoel (2) Inner cell mass (3) Trophoectoderm (4) Trophoendoderm Embryonic stem cells (ESCs) are foundational to mammalian development and regenerative […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Potency of Inner Cell Mass Cells in Mammalian Blastocyst: Pluripotency Explained
40. The cells of inner cell mass of a blastocyst stage mammalian embryo are (1) totipotent (2) pluripotent (3) multipotent (4) unipotent In mammalian embryogenesis, the blastocyst stage is a […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Cleavage in Centrolecithal Eggs: The Superficial Cleavage Pattern
Centrolecithal eggs show (1) superficial cleavage (2) displaced radial cleavage (3) bilateral cleavage (4) discoidal cleavage Introduction Centrolecithal eggs are a type of egg where the yolk is centrally located […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Progenitor Cells: Characteristics and Differences from Stem Cells
Which statement is true about progenitor cells? (1) They are same as stem cells (2) They are totipotent cells (3) They can divide but do not remain undifferentiated (4) They […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Amphibian Embryonic Development: Holoblastic Radial Cleavage Explained
5. Amphibian zygote will generally undergo (1) Holoblastic radial cleavage. (2) Holoblastic rotational cleavage. (3) meroblastic bilateral cleavage. (4) meroblastic rotational cleavage. Introduction Amphibians, such as frogs and salamanders, […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
The Capabilities of Induced Stem Cells Derived from Skin: Differentiation and Self-Renewal
If skin cells are converted into induced stem cell then they can (1) Only duplicate (2) Only differentiate (3) Differentiate and duplicate (4) Differentiate and duplicate such that number of […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
The Rotational Cleavage Pattern in Mammalian Embryonic Development
What is the pattern of cleavage observed in mammals? (1) Radial (2) Spiral (3) Rotational (4) Bilateral Introduction Embryonic cleavage is the series of cell divisions that transform a fertilized […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Understanding Mammalian Embryonic Cleavage: The Holoblastic Rotational Pattern
Which kind of cleavage is shown in mammals? (1) Holoblastic rotational (2) Meroblastic rotational (3) Holobastic radial (4) Meroblastic radial Introduction Embryonic cleavage is the initial phase of rapid cell […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Why Embryo Size Remains Constant During Early Cleavage Divisions
If an embryo undergoes 13 cleavage divisions during embryogenesis, then the size of the embryo compared to zygote (1) increases 13 times. (2) increases only 6-7 times. (3) increases in […]
