No. It is generally believed that the DNA of identical twins is exactly the same (one fertilized egg splits into two, and then develops into fetuses respectively), and the relationship between the two is like cloning. But because double yolk eggs are actually two independent fertilized eggs, their relationship should be biological brothers and sisters (fraternal twins), not identical twins.

Double-yolk eggs refer to eggs containing two yolks in one eggshell. Double-yolk eggs are usually much larger than normal eggs. The reason for the formation of double yolk eggs is that the two egg cells mature at the same time and separate from the follicles together and are incorporated into the fallopian tube. Each part of the fallopian tube is successively wrapped with albumen, shell membrane, eggshell and other materials, thus forming a double yolk egg. Even sometimes multiple egg cells mature at the same time and are incorporated into the fallopian tube together, forming polyyolk eggs.

Double yolk eggs can hatch chicks. If the "double yolk" eggs are indeed two fertilized eggs, then two chicks can be hatched. However, due to various reasons, the hatching effect is not ideal. If only one egg in a "double yolk" is fertilized, only one chick will hatch.

The fertilization rate of double yolk eggs is similar to that of normal eggs. However, the number of dead embryos in the double-yolk egg group at the early and late stages of incubation was much higher than the number of dead embryos in the presumed normal egg group. Double-yolk eggs are larger than normal eggs, even much larger, which we can see with the naked eye. The larger size of a double-yolk egg means that the space inside the egg is larger, but this does not mean that the chicken embryo has a larger space for growth. The double yolk egg is indeed one circle larger than the normal egg, but after all, it is not twice as large. However, this larger space has to accommodate one more chicken embryo. On average, the space occupied by each chicken embryo Compared with normal eggs, it is much less. This in turn directly affects the consumption of nutrients and oxygen, the movement of the chicken fetus and the subsequent breaking of the shell.

Chicks in double-yolked eggs are generally underdeveloped and weak, and breaking the shell becomes a high threshold. And most of them can only slowly run out of oxygen and energy, unable to reveal the brilliance of life.

Double-yolk eggs are not only much larger than normal eggs, but also have thicker eggshells. During the process of pecking the shell, the chick needs to change its body posture from time to time to change the angle of pecking the shell, so that it can penetrate the egg shell in a shorter and faster time. However, after the chick in the double-yolk egg is fully developed, the bodies of the two chicks occupy almost all the space in the egg. Not to mention changing the body posture, even moving is extremely difficult. matter.

Double yolk eggs can hatch chicks. If the "double yolk" eggs are indeed two fertilized eggs, then two chicks can be hatched. However, due to the above reasons, the hatching effect is not good. ideal. If only one egg in a "double yolk" is fertilized, only one chick will hatch.