Definition
The thread like structure present inside the nucleus bearer of hereditary character in the form of genes is called Chromosomes.
Discovery
Chromosomes were discovered by a German Biologist Walther Flaming in 1882. He placed the larva of salamander in a chemical Perkins Aniline, then he observed that the chromosomes become darker than other organelles of a cell.
Number of Chromosomes
The number of chromosomes varies from species to species.
For Example
- Penicillin => 2 Chromosomes
- Mosquito => 6 Chromosomes
- Drosophila => 8 Chromosomes
- Pea => 14 Chromosomes
- Frog => 26 Chromosomes
- Human => 46 Chromosomes
- Sugar Cane => 80 Chromosomes
- Fern => 100 Chromosomes
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