Uncle

An uncle is a male relative who is a sibling of a parent or married to a sibling of a parent. Uncles who are related by birth are second-degree relatives. The female counterpart of an uncle is an aunt, and the reciprocal relationship is that of a nephew or niece.

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Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 6 months ago

Two thirds of what he left goes to the son, and one third goes to the daughter. This is if he left only one son and one daughter only with out wife. If he left a wife, she gets one eighth, then the remaining should be made in three equal shares, two shares for the son and one share for the daughter.

Wassalam.

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Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 1 year ago

Bismihi ta'ala

Yes, a paternal and maternal uncle / aunt is considered mahram. 

And Allah knows best.