The carrier frequency and incidence of alpha thalassemia vary by the type and population. Carrier frequency of this condition is reported to be the highest in individuals of Southeast Asian, African, West Indian, and Mediterranean descent.
Clitheroe Castle Museum is adjacent to the castle. The castle was listed as a Scheduled Monument on 10 April 1915 (and later, under the Ancient Monuments and Archaeological Areas Act 1979 law).It was Grade I listed on 19 May 1950.t has been suggested that Clitheroe Castle may have been first built before 1086 as there is reference to the  castellatu Rogerii pictaviensis  in the Domesday Book entry for nearby Barnoldswick. However, it is likely the passage refers to another castle.
A castle (from Latin: castellum) is a type of fortified structure built in Europe and the Middle East during the Middle Ages by nobility.Scholars debate the scope of the word castle, but usually consider it to be the private fortified residence of a lord or noble.ossibly coerced into working for their lord, the construction of an earth and timber castle would not have been a drain on a client's funds. In terms of time, it has been estimated that an average sized motte â 5 m (16 ft) high and 15 m (49 ft) wide at the summit â would have taken 50 people about 40 working days.