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.
Contents [hide]
- 0.1 What is a Gene? – Meaning & Definition
- 0.2 Definition of Gene
- 0.3 Key Points About Genes:
- 0.4 Example Sentences:
- 0.5 What is Gene _ It’s Meaning and Definition A gene is the basic physical and functional unit
- 0.6 Cells and DNA
- 0.7 Gene concept
- 0.8 The Evolving Definition of the Term “Gene”
- 0.9 lac operon and fine structure of gene\
- 1
What is a Gene? – Meaning and Definition
What is a Gene? – Meaning & Definition
Word: Gene
Pronunciation: /dʒiːn/ (jeen)
Definition of Gene
A gene is the basic physical and functional unit of heredity in all living organisms. Genes are made up of DNA (Deoxyribonucleic Acid) and contain the instructions needed for an organism’s growth, development, and function.
Each person inherits genes from their parents, which determine characteristics like eye color, height, and even susceptibility to certain diseases.
Key Points About Genes:
Located in Chromosomes: Genes are found inside the nucleus of cells, arranged on chromosomes.
Carry Genetic Information: They act as instructions for making proteins, which are essential for body functions.
Hereditary Units: Traits are passed from parents to offspring through genes.
Made of DNA: The sequence of nucleotides (A, T, C, G) in a gene determines genetic traits.
Example Sentences:
The gene responsible for eye color is inherited from parents. Scientists study genes to understand genetic diseases like cancer and diabetes.
In Short: Genes are like a biological instruction manual that shape how living beings grow and function.
The Evolving Definition of the Term “Gene”
lac operon and fine structure of gene\
Here’s a clear and simple explanation of:
What is a Gene? – Meaning and Definition
Definition:
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA (Deoxyribonucleic Acid) and carry the instructions for making proteins, which perform most life functions and make up the majority of cellular structures.
Simple Explanation:
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Genes act like a blueprint or code that determines traits such as eye color, height, and even the risk for some diseases.
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They are passed from parents to offspring, which is how traits are inherited.
Scientific Description:
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A gene is a specific segment of DNA that contains the instructions for synthesizing a particular protein.
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Humans have approximately 20,000–25,000 genes located on chromosomes within the cell nucleus.
Example:
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The gene for eye color determines whether someone has blue, brown, or green eyes.
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A mutated gene can lead to diseases like cystic fibrosis or sickle cell anemia.
In Hindi (हिंदी में):
जीन अनुवांशिकता की मूल भौतिक और कार्यात्मक इकाई है। यह डीएनए से बनी होती है और शरीर में प्रोटीन बनाने के लिए निर्देश देती है।
Key Points:
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Genes are units of heredity.
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Made of DNA.
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Found on chromosomes.
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Help produce proteins.
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Responsible for inherited traits.
Would you like:
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A diagram or chart of gene structure?
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A PDF summary for revision or class notes?
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A comparison of gene vs. chromosome vs. DNA?
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