In which year did Wilhelm Johannsen coin the term ‘gene’ to describe the Mendelian units of heredity?

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SSC CHSL Exam 2024 Tier-I Official Paper (Held On: 04 Jul, 2024 Shift 2)
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  1. 1920
  2. 1910
  3. 1900
  4. 1909

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Option 4 : 1909
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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The correct answer is 1909

Key Points

  • Wilhelm Johannsen coined the term 'gene' in 1909.
  • This term was used to describe the Mendelian units of heredity, which are the fundamental units of genetic inheritance.
  • Johannsen's work was crucial in the development of the field of genetics and provided a clear terminology to describe hereditary factors.
  • The term 'gene' has since become a central concept in genetics, helping scientists understand how traits are passed from one generation to the next.

Additional Information

  • Wilhelm Johannsen was a Danish botanist and geneticist who made significant contributions to the field of genetics.
  • In addition to coining the term 'gene', Johannsen also introduced the concepts of genotype and phenotype.
  • The genotype refers to the genetic makeup of an organism, while the phenotype refers to the observable characteristics of an organism.
  • Johannsen's work laid the foundation for modern genetic research and our understanding of how genetic information is transmitted.
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