TY  - JOUR
AU  - Liebich, Steve
PY  - 2020
DA  - 2020/07/02
TI  - “Evolution” of Embryogenesis: Complexity of the Early Developmental Stages in the Animal Kingdom
JO  - OBM Genetics
SP  - 113
VL  - 04
IS  - 03
AB  - Multicellularity has gained the advantage over the unicellular world by expanding the number of increasingly more complex tissues that achieve advanced and specific functions. This same event gave rise to the most evolved group of organisms, namely mammals. Even though the complexity of multicellular organisms does not necessarily provide them with excellent adaptation modes performed by unicellular and prokaryotic organisms, this complexity per se stands as one of the greatest phenomena in biology. However, there is an inherent set of biochemical and physiological programs that all animals share and tend to execute in similar manners. Most of these processes are evolutionarily conserved and often arise several times with different phylogenetic origins; this implies their importance and universalism in the Animal kingdom. This review summarizes the most significant embryological mechanisms described in many model organisms of echinoderms, nematodes, insects, chordates, and mammals including humans. Although complex and diverse, most of the mechanisms share an outstanding number of similarities that lead researchers to find the answer as to how and in which way the mechanisms had succeeded to help develop complex life.
SN  - 2577-5790
UR  - https://doi.org/10.21926/obm.genet.2003113
DO  - 10.21926/obm.genet.2003113
ID  - Liebich2020
ER  -