Mother/embryo relationship: Mammals not the only animals to feed embryo during gestation

30 abril 2015

For over a century, the scientific understanding of matrotrophy of an embryo developing inside a mom’s body has come from vertebrates. This process was thought to be infrequent among the other 33 or so major groups or phyla of animals. But a new major study reports that matrotrophy has evolved in at least 21 of 34 animal phyla.