The new animal unit can have a better reaction though the embryos

The new animal unit can have a better reaction though the embryos can be left without a female similar to fish when spawn takes place in the water leading to the irrelevance of the nests and protection received from the parents. On the contrary, the embryos can be of a bright color leading to the crucial importance of protection of those during the period of their development. Other variations can be obtained due to differences in the setting of the animal units such as venom typical of those representatives that do not live in the water or vice versa. Besides, changes in pigmentation can take place in the organism when it is strong enough to protect itself making difference between the males and female