Topics
Heredity and Evolution
- Heredity
- Protein Synthesis
- Transcription
- Translation
- Translocation
- Mutations
- Evolution
- Evidence of Evolution > Morphological Evidences
- Evidence of Evolution > Anatomical Evidences
- Darwin’s Theory of Natural Selection (Darwinism)
- Lamarck’s Theory of Evolution (Lamarckism)
- Speciation
- Human Ancestors
- Homo Sapiens Sapiens (Modern Man)
Life Processes in Living Organisms Part -1
- Life Processes in Living Organisms
- Living Organisms and Energy Production
- Phases of Respiration: Glycolysis
- Phases of Respiration: Tricarboxylic Acid Cycle (Citric Acid Cycle or Kreb’s Cycle)
- Phases of Respiration: Electron Transport Chain (Electron Transfer System)
- Production of ATP
- Cellular Respiration
- Energy From Different Food Components
- Cell Division: an Essential Life Process
- Mitosis > Karyokinesis (Division of Nucleus)
- Mitosis > Cytokinesis (Division of Cytoplasm)
- Significance of Mitosis
- Meiosis: Reduction Division
- Stages of Meiosis: Meiosis I
- Stages of Meiosis: Meiosis II
- Significance of Meiosis
- Mitosis Vs Meiosis
Life Processes in Living Organisms Part - 2
Environmental Management
Towards Green Energy
- Energy and Use of Energy
- Generation of Electrical Energy
- Power Plants Based on Nuclear Energy
- Power Plant Based on Thermal Energy
- Power Plants Based on Natural Gas
- Electric Energy Generation and Environment
- Electricity Generation using Hydroelectric Energy
- Electricity Generation using Wind Energy
- Electricity Generation using Solar Energy
- Solar Photovoltaic Cell
- Solar Thermal Power Plant
Animal Classification
- Classification of Living Organisms
- History of Animal Classification
- Traditional Method of Animal Classification
- Conventional System of Animal Classification
- Criteria for New System of Classification > Grades of Organization
- Criteria for New System of Classification > Body Symmetry
- Criteria for New System of Classification > Germ Layers
- Criteria for New System of Classification > Body cavity (Coelom)
- Criteria for New System of Classification > Body Segmentation
- Phylum: Porifera
- Phylum: Cnidaria/Coelenterata
- Phylum: Platyhelminthes
- Phylum: Aschelminthes
- Phylum: Annelida
- Phylum: Arthropoda
- Phylum: Mollusca
- Phylum: Echinodermata
- Phylum: Hemichordata
- Phylum: Chordata
- Subphylum: Urochordata
- Subphylum: Cephalochordata
- Subphylum: Vertebrata/Craniata
- Subphylum: Vertebrata/Craniata > Class: Cyclostomata
- Subphylum: Vertebrata/Craniata > Class: Pisces
- Subphylum: Vertebrata/Craniata > Class: Amphibia
- Subphylum: Vertebrata/Craniata > Class: Reptilia
- Subphylum: Vertebrata/Craniata > Class: Aves
- Subphylum: Vertebrata/Craniata > Class: Mammalia
Introduction to Microbiology
Cell Biology and Biotechnology
- Cell Biology (Cytology)
- Stem Cells
- Stem Cell Research
- Organ Transplantation
- Organ and Body Donation
- Biotechnology
- Crop Biotechnology > Hybrid Seeds
- Crop Biotechnology > Genetically Modified Organisms (GMOs)
- Crop Biotechnology > Biofertilizers
- Animal Husbandry (Livestock)
- Human Health
- Vaccines and Vaccination
- Edible Vaccines
- Treatment
- Interferons
- Gene Therapy
- Cloning
- Industrial Products/White Biotechnology
- Environment and Biotechnology
- Food Biotechnology
- DNA Fingerprinting
- Green Revolution
- White Revolution
- Blue Revolution
- Fertilizers
- Insecticides
- Types of Farming in India > Organic Farming
- Animal Husbandry (Livestock) > Apiculture (Bee Farming)
- Cultivation of Medicinal Plants
- Processing and Preservation of Fruits
Social Health
Disaster Management
Life's Internal Secrets
- Autotrophic Plants
- Heterotrophic Plants
- Human Digestive System
- Nutrition in Plants
- Transport
The Regulators of Life
The Life Cycle
Mapping Our Genes
Understanding Metals and Non-Metals
Striving for Better Environment 2
- Use of Efficient and Eco-friendly Technology
- Sustainable Use of Resources
- Enforcement of Acts, Laws and Policies
Amazing World of Carbon Compounds
- Definition: Karyokinesis
- Definition: Centromere
- Definition: Spindle Fibres
- Key Points: Karyokinesis
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Definition: Karyokinesis
All the nuclear changes that occur during cell division are collectively termed karyokinesis (karyo: nucleus).
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Definition: Centromere
The two sister chromatids remain attached to each other at a small region called centromere.
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Definition: Spindle Fibres
A number of fibres appear between the two daughter centrioles, which are called the spindle fibres.
Maharashtra State Board: Class 10
CISCE: Class 10
CISCE: Class 10
Key Points: Karyokinesis
Karyokinesis is the division of the nucleus during mitosis, ensuring equal distribution of chromosomes into two daughter nuclei.
It occurs in four continuous phases:
- Prophase – Chromosomes condense and become visible; nuclear membrane and nucleolus disappear; spindle fibres form.
- Metaphase – Chromosomes align at the cell's equator and attach to spindle fibres via centromeres.
- Anaphase – Centromeres split; sister chromatids separate and move to opposite poles.
- Telophase – Chromatids decondense into chromatin; nuclear envelope and nucleolus reappear around each set of chromosomes.
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Related QuestionsVIEW ALL [60]
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the terms in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Anaphase | (a) Chromosomes become arranged in a horizontal plane at the equator. |
| (ii) Prophase | (b) Daughter chromosomes move to opposite poles of the spindle. |
| (iii) Telophase | (c) Chromosomes become visible as fine, long threads. |
| (iv) Metaphase | (d) Chromosomes lose their distinctiveness and gradually become transformed into chromatin network. |
