0 (an animal) having a backbone -- obratlovec
Insects are not vertebrates.
However, in rodents and other vertebrates, postnatal cell loss may be more significant.
In vertebrates, there are two groups of cells that show a remarkable capacity for migration- the neural crest cells and the nerve cells.
To what extent is the signal in the chick the same as in other vertebrates?
Thus, alterations in different genes have distinct effects on the pallium, which may help to explain the different models found in vertebrates.
Remarkably, the primary dispersal is by vertebrates, in whose guts the caruncles are not destroyed.
In particular, we have examined mammals and birds, two groups of vertebrates separated by over 300 million years of evolutionary divergence.
Exceptions there are, notably with the echinoderms and some vertebrates, but these are rather brief and the great wealth of palaeontological data is largely overlooked.
If you happen to need detailed information about fossil track sites, particularly those of large vertebrates, then this is an extremely useful and insightful compilation.
