Question

Which of the following figures represent maternal twins?

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

The graphical representations given in the options are used in a pedigree chart. A pedigree chart is used to represent the transmission of a particular trait through members of different generations of a family. For the representation of members of a family, different geometrical figures are used. Straight lines are used to depict the relationship between the members. These relationships are depicted in the images given below.
So, option a represents maternal twins or identical twins or monozygotic twins.
Option b represents non-identical twins, fraternal twins or dizygotic twins.
Option c represents marriage between a man and a woman.
Option d represents marriage between close relatives.