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What is Gene _ It’s Meaning and Definition A gene is the basic physical and functional unit.

What is Gene _ It’s Meaning and Definition A gene is the basic physical and functional unit.

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Here’s a clear and concise explanation of “Gene” — its meaning and definition, useful for school, competitive exams (like NEET/NCERT/UGC NET), or general biology understanding:


What is a Gene?

Gene (जीन) एक मौलिक भौतिक और कार्यात्मक इकाई है, जो जीवों के लक्षणों को नियंत्रित करती है।

Definition (English):

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA (Deoxyribonucleic Acid) and carry the instructions to make proteins.


Detailed Explanation:

Feature Description
Structure A segment of DNA located on a chromosome
Function Carries genetic information from parents to offspring
Role Guides cells to make specific proteins, which affect traits
Location Found inside the nucleus of every living cell

Gene → DNA → Protein → Trait

Gene is a code → for making protein → that results in a trait
(Example: Eye color, blood type, height)


Examples of Genes:


Gene Definition in Hindi (परिभाषा):

जीन वह डीएनए का खंड (segment) है, जो किसी विशेष प्रोटीन को बनाने की सूचना (code) देता है और यह किसी जीव के लक्षणों (traits) को निर्धारित करता है।


Quick Facts:

Feature Value
No. of genes in humans ~20,000–25,000
Discovered by Gregor Mendel (father of genetics)
Studied in Genetics & Molecular Biology

Visual Summary (Concept Map):

Chromosome
   ↓
DNA (double helix)
   ↓
Gene (segment of DNA)
   ↓
mRNA (via transcription)
   ↓
Protein (via translation)
   ↓
Trait (e.g., eye color, height)

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What is Gene _ It’s Meaning and Definition A gene is the basic physical and functional unit.

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