| Haeckel noted that multicellular animal organisms follow a common pattern in early embryological development. |
| In fact, Darwin referred to embryological homology as the strongest single class of facts that existed to support his theories. |
| She joined our team in 2003 and is now responsible for all embryological and andrological services provided at our unit. |
| The obturator artery is very variable in origin and no embryological explanation has been found. |
| Aetiological factors and embryological constraints mean that each of the known epileptogenic lesions affects just one of these four sectors. |
| One problem which arises at once is that homologous structures are often specified by non-homologous genetic systems, while it also seems difficult to establish an embryological basis for homology. |
