Twin pregnancies have become increasingly common, thanks to advancements in fertility treatments and assisted reproductive techniques. Many women are opting to have children later in life, which can further increase the likelihood of having twins.
In this blog, we explore the different kinds of twin pregnancy.
Typical & atypical twining
There are typically two type of twins: fraternal and identical. Fraternal twins occur when two separate sperm fertilise two different eggs. Identical twins result from one fertilised egg splitting into two embryos.
Atypical twinning refers to rare cases where twin conception occurs unusually. These atypical twin pregnancy types may have genetic differences that sometimes lead to complications.
Identical twins
Monozygotic or identical twins occur when a fertilised egg splits into two embryos. They share 100% of their DNA and are always the same gender. Identical twins can either share the same amniotic sac or have separate ones, based on when the egg divides.
Non-identical twins
Dizygotic or fraternal twins are the most common type. They develop when two separate eggs are fertilised by two different sperm, resulting in twins who share only 50% of their DNA. Non-identical twins can be of different genders and do not necessarily resemble each other. They usually have separate placentas and amniotic sacs.
Rare types of twins
While monozygotic and dizygotic twins are common, other different type of twin pregnancies are:
● Semi-identical twins
Also known as sesquizygotic twins, this extremely rare type occurs when a single egg is fertilised by two sperm. These twins can share anywhere from half to all of their DNA. Semi-identical twins can be of different genders.
● Quaternary twins
This occurs when two different sets of identical twins have children within a short period. Although cousins, they share more genetic similarities than typical cousins and may even resemble siblings.
● Conjoined twins
Conjoined twins result when a fertilised egg begins to split but does not complete the process. These twins remain physically connected and may share organs. The point of connection can vary, such as at the chest, abdomen, or head. While some conjoined twins can be separated through surgery, the procedure is complex and depends on how they are connected.
● Parasitic twins
Parasitic twins develop when one twin fails to develop fully and remains attached to the other. Unlike conjoined twins, the underdeveloped twin is nonfunctional and often appears as additional limbs or body structures on the developed twin.
Conclusion
The pregnancy phase is fascinating whether you are expecting a singleton or twins. However, alongside the excitement, it's important to be prepared for any sudden mishaps. This is where comprehensive maternity insurance comes into play. Having a right policy can help alleviate concerns by covering medical expenses before and after delivery.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.