Answer: Homologous chromosomes
Step-by-step explanation:
Homologous chromosomes are the pair of chromosomes that are contained in diploid organisms such as humans. There are 23 pairs of homologous chromosomes, and 46 in total (44 non-sex chromosomes and 2 sex-chromosomes)
During gamete formation, the mother produces an egg cell with 23 chromosomes, and the father produces a sperm cell with 23 chromosomes. Both combines, fertilize and yield a single cell known as Zygote with 46 chromosomes (i.e 23 pairs of homologous chromosomes)