Biological Role In the red blood cells of the fetus it is possible to identify a form of hemoglobin different from the adult one. From the structural point of view, the fetal hemoglobin (α 2 γ 2 ) differs from the adult one (α 2 Β 2 ) due to the presence of two gamma chains instead of the two alpha chain In particular, fetal hemoglobin is formed by two α chains and two γ chains, consisting of 141 and 146 amino acids respectively. The
Category fetal health
Related articles: Trisomy 18 Definition Trisomy 18 is a genetic disease caused by the presence of an excess chromosome 18 inside the cells. This anomaly can occur in an absolutely random way: the defect takes place before the conception, inside the gamete (ovule or spermatozoon) of one of the parents, which keeps both copies of chromosome 18 inside the same cell