Consider the following statements:
1. Identical twins are known as monozygotic and monozygotic twins are always of the same biological sex.
2. Non-identical twins are called dizygotic and dizygotic twins can be either of the same or of different sexes.
Which of the statements given above is/are correct?
1
1 only
2
2 only
3
Both 1 and 2
4
Neither 1 nor 2