Acquired characters, those developed during an organism’s lifetime due to environmental factors or lifestyle, are not inherited because they don’t involve changes in the DNA of germ cells (sperm or egg). Germ cells, which are passed on to offspring, carry the genetic information, and changes in somatic cells (body cells) do not affect this DNA.
Here’s a more detailed explanation:
Changes in Somatic Cells:
Acquired traits are changes that occur in non-reproductive tissues, like muscles developed through exercise or a scar from an injury. These changes affect body cells, but not the reproductive cells.
No Genetic Alteration:
These acquired traits do not alter the DNA within the sperm or egg, which are the cells that transmit genetic information to the next generation.
Inherited Traits:
In contrast, inherited traits are passed down through genes, which are located within the DNA of germ cells. These genes provide the instructions for the development of specific characteristics.
Lack of Genetic Basis:
Because acquired traits are not encoded in the DNA of germ cells, they are not transmitted to offspring. Examples:
A person developing strong muscles through exercise will not pass on that muscle strength to their children.
If you have a scar from an injury, that scar will not be inherited by your offspring.