Which structure fuses to form a diploid zygote during sex reproduction

Answer: Male and female gametes fuse together to form a diploid zygote during sexual reproduction.
Explanation: Sexual reproduction is a process in which male and female gametes fuse together to form new organism.
Male gametes are known as sperms and female gametes are known as eggs.Sperm and egg are haploiy. By the fusion of sperm and egg a diploid cell is produced , known as Zygote. Fusion of male and female gametes is known as fertilization. Zygote contains genetic information half from mother and half from father. From zygote embryo is developed.