Structure of Gametes - Spermatozoan
A sperm is a haploid male gamete which fuses with the ovum to form the diploid zygot..
Structure of Gametes - Spermatozoan
Structure of Gametes - Spermatozoan - A sperm is a haploid male gamete which fuses with the ovum to form the diploid zygot..
Structure of Gametes - Spermatozoan - A sperm is a haploid male gamete which fuses with the ovum to form the diploid zygot..Infertility in Males
Infertility in Males may be due to absence of sperm, low sperm count, abnormal sperms, autoimmunity (presence of antibodies in the male reproductive system itself), premature ejaculation and impotence. Infertility can be treated by either hormone treatment or modern methods of ..
Male Reproductive System
Male Reproductive System - The male reproductive system comprises of the following: a pair of testes , organs that produce the male gametes i.e., sperms a network of tubules and tubes for passage of the sperms called the duct system associated glands a mating..
Planogametic Copulation
Here motile gametes called planogametes undergo fusion. When both the gametes are motile and morphologically similar, the fusion process is called isogamy. Eg.: Synchytrium When both the gametes are motile but differ in their size, the fusion proces..
Meiosis
Meiosis is a cell division occurs in reproductive cells (gametes). The male gamete is known as the sperm in animals and the female gamete is known as the ovum (egg..
Sex Determination
Sex Determination - During the formation of gametes, the females will have only one type of gametes, all with one X chromosome. However, the males will produce two types of gametes or sperms, half with X chromosome and half with Y chromosome. Thus t..
Sex Determination - During the formation of gametes, the females will have only one type of gametes, all with one X chromosome. However, the males will produce two types of gametes or sperms, half with X chromosome and half with Y chromosome. Thus t..Pollination
The pollen grains which produce the male gametes and the ovules which bear the female gametes are borne on different structures. It therefore becomes necessary that for sexual union to occur, the pollen grains must be transferred to the stigma. The ..
Sexual Reproduction in Animals
Sexual reproduction is seen in nearly all animals. In animals reproduction also involves production of gametes that are haploid cells . In unicellular organisms like the protozoans, the gamete-producing individuals are called gametocytes. The gametes may be similar - i..
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