Here's why:

* Diploid cells contain two sets of chromosomes, one from each parent. This is the standard genetic makeup of most organisms.

* Haploid cells contain only one set of chromosomes. These are typically involved in sexual reproduction (like sperm and egg cells).

Cloning requires a complete set of genetic information to create a new individual. A haploid cell wouldn't have the full set of genes needed to develop.

The Process of Cloning

1. Somatic Cell Nuclear Transfer (SCNT): The most common cloning method involves taking a diploid cell from the organism you want to clone (e.g., a skin cell).

2. Enucleation: The nucleus (containing the genetic material) is removed from an egg cell.

3. Nuclear Transfer: The nucleus from the somatic cell is transferred into the enucleated egg cell.

4. Stimulation: The egg cell is stimulated to start dividing, eventually forming an embryo.

5. Implantation: The embryo is implanted into a surrogate mother.

This process ensures the resulting clone has the same genetic makeup as the donor organism.