The term 'gene' was first used by _______?
Correct answer: A. Johannsen
- A. Johannsen
- B. Mendel
- C. Lemark
- D. Cuvier
Explanation
Wilhelm Johannsen introduced the term gene in 1909 for the hereditary unit responsible for a trait. Mendel established the principles of inheritance but used terms such as factors rather than the word gene, making him the likely mistaken choice.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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