Answer & explanation:
The cell was discovered in 1669 by the English scientist Robert Hooke when looking at a piece of tissue in a two-lens microscope. Hooke was able to visualize small cavities in the experiment piece, then naming such cell cavities.
Only a century and a half after the discovery of the cell, that the Cell Theory was launched, replacing the theory of spontaneous generation (or abiogenesis).
Before that, many scientists were already busy understanding the structure and functioning of the cell, generating knowledge that became fundamental to the development of biology, specifically cytology, a branch of science that studies the structure, functions and development of cells.
Chromosomes makes up genes while genes and chromosomes make up the entirety of DNA. A living organism inherits 46 chromosomes, 23 from each parent. These chromosomes are not genes but they form genes, which are just the traits of an individual that are unique. DNA is the entire make up of an organism that controls everything about a person such as likelihood to have disease or their physical appearance.
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