Albino condition is found in which human race?

Given below is a pedigree chart showing the inheritance of a certain trait in humans. Select the correct option for the given chart.

Autosomal dominant disorder $- P$
Autosomal recessive disorder $- Q$
$X$-linked recessive disorder $- R$
$I -$ Haemophilia,$II -$ Sickle cell anaemia,$III -$ Phenylketonuria,
$IV -$ Thalassaemia,$V -$ Colour blindness,$VI -$ Myotonic dystrophy
Select the correct option for $P, Q$ and $R$.
$\quad\quad P \quad\quad Q \quad\quad R$

$A$ man and a woman do not show any apparent genetic disease. They have $7$ children ($2$ daughters and $5$ sons). Three sons suffer from the given disease,but none of the daughters are affected. Which pattern of inheritance can you suggest for this disease?

Recessive characters are expressed:

Mention any two autosomal genetic disorders with their symptoms.