NEET BIOLOGY

Detailed explanation-1: -Fertilization is the fusion of the male and female sex gametes so as to produce an embryo/zygote. This 2-celled embryo is called the zygote. This zygote further undergoes cleavage and the number of daughter cells multiplies finally forming a blastocyst, which after implantation continues to grow in the uterus.

Detailed explanation-2: -zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.

Detailed explanation-3: -Fertilization is the process in which haploid gametes fuse to form a diploid cell called a zygote.

Detailed explanation-4: -During fertilization, the nuclei of the sperm and the egg fuse to form a single nucleus. This results in the formation of a fertilized egg or zygote.

Detailed explanation-5: -A zygote, also known as a fertilized ovum or fertilized egg, is the union of a sperm cell and an egg cell. The zygote begins as a single cell but divides rapidly in the days following fertilization. The zygote’s single cell contains all of the 46 necessary chromosomes, getting 23 from the sperm and 23 from the egg.