Samay | UP/Uttarakhand | MP/Chattisgarh | Bihar/Jharkhand | Rajasthan | Aalami Samay

Meet 12-year-old Indian conjoined twin boys

Meet Indian conjoined twin boys Shivanath and Shivram Sahu

Conjoined twins occur when the zygote, the initial cell formed by sexual reproduction, fails to completely separate. It is thought to occur in roughly one in every 50,000 births, but just one per cent make it to their first birthday and two-thirds are stillborn.