Abstract
Every human is a result of a cell formed from the fertilization of an oocyte
with a sperm. This cell is called a zygote. A miracle is how just one cell can make a lot
of tissues and organs. Regulation of gene expression is the first step of tissue
development. Regulation of gene expression has different levels, including the genome
(DNA content), transcriptome (RNA content, resulted from the transcription of DNA),
and proteome (protein content, resulted from the translation of RNA) levels. The final
consequence of gene expression regulation is cellular phenotype. The resulted proteins
act for inter-cellular signaling transduction and tissue development. We aimed to show
the details of gene expression regulation, cellular signaling transduction and
interaction, and tissue development. We have shown a scheme of the gene to fetus
formation.
Keywords: Tissue development, Signaling transduction, Gene expression regulation.