Concept:
Pedigree symbols are used in genetics to represent family relationships and inheritance patterns.
Step 1: Understanding the diagram.
The figure shows two offspring arising from a single point and connected by a horizontal line at the top.
Step 2: Interpretation.
This indicates that the twins originate from the same zygote and are therefore genetically identical.
Step 3: Identification.
Such a symbol represents monozygotic (identical) twins.
Step 4: Evaluating the options.
Male $\rightarrow$ Represented by a square (incorrect)
Monozygotic twins $\rightarrow$ Identical twins with connecting line (correct)
Mating $\rightarrow$ Horizontal line between two individuals (incorrect)
Dizygotic twins $\rightarrow$ No connecting line (incorrect)
Step 5: Conclusion.
Thus, the given pedigree symbol represents monozygotic twins.
