The sperm cell fertilises the egg cell, forming a zygote. After fertilisation, the zygote splits into two. This will result in the following type of twins:

Question

a. Identical twins
b. Monozygotic twins
c. Fraternal twins
d. Both A and B

Answer 1

The correct answer is: d. Both A and B.

Identical twins and monozygotic twins refer to the same phenomenon, where a single zygote splits into two, resulting in genetically identical individuals. Fraternal twins, on the other hand, come from two separate eggs fertilized by two separate sperm cells, making them genetically distinct.