Gametes produced by the male parent are called spermatozoa (commonly called sperm cells), and female gametes are Oocytes (commonly referred to as ova or eggs).

Formation of the Female Gamete. Gametes are specialized sex cells that contain half the number of chromosomes of the parent.

Gametes are reproductive cells that unite during sexual reproduction to form a new cell called a zygote.
During fertilization, male and female gametes fuse, producing a diploid (i.e., containing paired chromosomes) zygote.

After the formation of gametes, the male and female gametes ideally come in physical bond, so that they can be fused with each other for fertilization. Formation of Gametes Fertilization is defined as the fusion between the male and female gametes, that is, sperm and egg, thereby reestablishing the normal number of chromosomes in humans (46 chromosomes).. For human fertilization to be possible, it is necessary that a man ejaculates inside the vagina of a woman. In case of humans, the male gametes are motile while the female gametes are stationary in action. The female gamete is called an egg or ova. In humans, the female gamete is called an ovum or egg, while the male gamete is called the sperm. Gametes (both male and female) are the products of a special type of cellular reproduction called meiosis. This is an example of anisogamy or heterogamy, the condition in which females and males produce gametes of different sizes (this is the case in humans; the human ovum has approximately 100,000 times the volume of a single human sperm cell). It is much smaller than the female gamete and very mobile. This condition is called ‘anisogamy’ or ‘heterogamy’, wherein the female and male gametes are of different sizes (in the case of humans, the ovum is ~20 times larger than the sperm cell). Definition of fertilization. In short a gamete is an egg cell (female gamete) or a sperm (male gamete). Humans reproduce sexually, with both parents contributing half of the genetic makeup of their offspring via sex cells or gametes. It has a long tail, flagellum, that allows it to move towards the female gamete. The gametes in males and females are different. The male gamete is called sperm.
It is much larger than the sperm and is not made to move. Gametes are formed through meiosis (reduction division), in which a germ cell undergoes two fissions, resulting in the production of four gametes. During such transfer, a large number of gametes do not reach the female gametes. Human development begins at fertilization – a process in which a sperm and an egg unite to form a single cell, called the zygote.