Final answer:
Monozygotic (MZ) twins are identified as identical twins because they originate from the same zygote, thus sharing identical genetic material, which differentiates them from fraternal twins.
Step-by-step explanation:
False. Monozygotic (MZ) twins are more commonly known as identical twins, not fraternal twins. Monozygotic twins result from a single zygote that splits during early development, leading to two offspring with the same genetic material. In contrast, fraternal twins, or dizygotic twins, develop from two different eggs fertilized by two different sperm, making them genetically distinct, similar to non-twin siblings. It is notable that identical twins can have different experiences, which can contribute to variations in their personalities and life choices, even though their genetic makeup is identical.