Here's why:
* Chromosomes: These are thread-like structures found in the nucleus of cells that contain genetic information.
* Pairs: Humans (and many other organisms) have two copies of each chromosome, one inherited from each parent. These pairs are called homologous chromosomes.
* Diploid: A diploid cell has two complete sets of chromosomes. This means it has a pair of each chromosome.
Examples of diploid cells:
* All cells in your body except for sex cells (sperm and egg)
* Most plant cells
* Many fungal and animal cells
Contrast with haploid cells:
* Haploid cells have only one set of chromosomes (half the number of a diploid cell).
* Sex cells are haploid, so when they combine during fertilization, they create a diploid offspring.
