Principle differences between germ cells and somatic ones are shown below

Principle differences
between germ cells and somatic ones are shown below

Differences	Germ cells	Somatic cells
Chromosomal set	23 (haploid)	23x2 (diploid)
Possibility to assimilation	Have	Have no
Without fertilization	Die	Live

Prenatal
period

Prenatal (antenatal period) begins
from male and female germ cells meeting, which result in zygote formation. This
period includes next processes:

1. Fertilization –fusion of germ cells.

2. Cleavage – series of rapid zygote
devisions with short interphase, which result in formation of multicellular organism – blastula.

3. Gastrulation – process of germ
layers (fetal membranes) formation (ectoderm, endoderm and mesoderm).

4. Neurulation – formation of axial
organs: notochord, neural tube and premordial gut.

5. Histogenesis – period of tissues
orogin and formation.

6. Organogenesis means the appearance
and and development of recognizable organs.