Yes, true. According to western historians, Asian Aryan genetically links with Iranian and Iraqis. But Humans, Animals and plants also change physically if they re-locate geographically in different places for very long time (million years). Science tells that weather plays vital role on those humans? physical changes. Food and living environment are also makes different to humans? anatomy. Mixed or cross human birth is also another factor. We must not confuse on it. Definitely, Iranian and South Asian Indian looks some different, but their genetic key are the same. Because same race people separate and geographically re-locate for so long time. In 10, 00,000 Light years ago, earth changes its physical landscape so many times. Definitely, Human race, animals and plants were separated one land to another. Good example: Snow bear and Jungle bear.