The embryo is the early stage of the development of the multicellular organism. Each embryo starts development as the zygote, a single cell resulting from the fusion of gametes, The zygote undergoes many rapid...
The suitable female age for pregnancy ranges between 18 : 35 year, If the age decreases or exceeds that range, both the mother & embryo will be subjected to serious problems and the possibility...
Fertilization is the fusion of the male gamete (sperm) with the female gamete (ovum) to form the zygote which divides to form the embryo, The man may be considered infertile, if the number of...
Sexual reproduction depends on meiotic division, on forming the gametes (male-female), where the number of chromosomes is reduced to its half (n) and during fertilization, the male gamete fuses with the female gamete, therefore...
