Posts Tagged “genetics”

08w09:1 TAAGTG

by timothy. 0 Comments

Blue eye color in humans may be caused … | Eiberg, Troelsen, Nielsen, Mikkelsen, Mengel-From, Kjaer, Hansen
The origin of the founder mutation – The mutations responsible for the blue eye color most likely originate from the neareast area or northwest part of the Black Sea region, where the great agriculture migration to the northern part of Europe took place in the Neolithic periods about 6–10,000 years ago (Cavalli-Sforza et al. 1994).

The high frequency of blue-eyed individuals in the Scandinavia and Baltic areas indicates a positive selection for this phenotype (Cavalli-Sforza et al. 1994; Myant et al. 1997). Several theories has been suggested to explain the evolutionary selection for pigmentation traits which include UV expositor causing skin cancer, vitamin D deficiency, and also sexual selection has been mentioned. Natural selection as suggested here makes it difficult to calculate the age of the mutation.

Blue Eye Genotype