Here's why:
* Chromosomes: Humans have 23 pairs of chromosomes, with one chromosome from each pair coming from your mother and the other from your father.
* Equal Contribution: Each chromosome contains DNA, so you receive 50% of your DNA from your mother and 50% from your father.
However, there are some nuances:
* Mitochondrial DNA: You inherit your mitochondrial DNA, which is separate from the DNA in your chromosomes, solely from your mother. This DNA plays a role in energy production within your cells.
* X and Y Chromosomes: Females have two X chromosomes (one from each parent), while males have one X chromosome (from their mother) and one Y chromosome (from their father).
So while the overall amount of DNA is equal, the specific inheritance patterns differ between chromosomes and mitochondrial DNA.