Identical twins have the same gender because they share the same DNA.
DNA stands for Deoxy ribose nucleic acid.
DNA is a self-replicating substance that makes up the majority of chromosomes in practically all living creatures which genetic information carrier.
Identical twins are also known as monozygotic twins.
Identical twins are created when a single egg is fertilized by a single sperm and subsequently splits into two.
Identical twins have identical genomes and are of same gender either both male or both female.
One fertilized egg (ovum) separates and develops into two newborns with identical genetic information, resulting in identical or monozygotic twins.
Hence , the correct option is A.
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