How many sets of chromosomes do diploid cells contain?

Diploid cells contain two complete sets of chromosomes, one inherited from each parent. In humans, for example, diploid cells have 46 chromosomes, organized into 23 pairs. Each pair consists of homologous chromosomes that carry the same genes but may have different alleles. This diploid state is crucial for sexual reproduction, as it allows for genetic variation while maintaining a stable chromosome number across generations. In contrast, haploid cells, which have only one set of chromosomes, play a different role in reproduction, particularly in the formation of gametes.