Why are Iranid and Arabid so similar to each other?

[cyberlorian]

As far as I know, the origin of Arabid is Arabian peninsula and the origin of Iranid is steppes. So, why are they so similar to each other?

[Abdelnour]

Both are dark med types.

[cyberlorian]

Both are dark med types.

Is the origin of Iranids steppes?

[Abdelnour]

Is the origin of Iranids steppes?

Not really sure tbh.

[Fibonacci]

Both are dark med types.

Dark? Iranids are much more lighter than arabids on average. these are pictures of Iranians from Tehran. Even the American journalist is as light as the Iranians around him, Iranians just have a yellow undertone rather than a red one like his.

http://imgur.com/qhnF8W2.jpg
http://imgur.com/QZpFBpf.jpg
http://imgur.com/RjNuB7x.jpg
http://imgur.com/fh1LRx7.jpg
http://imgur.com/aoVg1iF.jpg
http://imgur.com/5uy0Zuz.jpg
http://imgur.com/bTra1qV.jpg
http://imgur.com/FgmdshE.jpg

[Fibonacci]

As far as I know, the origin of Arabid is Arabian peninsula and the origin of Iranid is steppes. So, why are they so similar to each other?

They're not similar at all, perhaps some Arabid influenced Iranids are classified as pure Iranids which is what you're most likely looking at. Iranid is the mixture of steppe phenotype and neolithic Iranian phenotype.

Iranids are taller, lighter and can be more robust with narrow features than Arabids. Iranids evolved on the harsh Iranian plateau, there is no reason as to why they should be anthropologically similar to arabids whom evolved on flat land deserts.

Comparison between modern Iranid and ancient iranid
http://imgur.com/ou9g6bq.jpg