Selective advantage of fra (X) heterozyg
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F. Vogel; W. E. Crusio; C. Kovac; J. P. Fryns; M. Freund
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Article
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1990
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Springer
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English
โ 788 KB
The high incidence of the fra (X) syndrome (about 1:2000 male newborns) requires an explanation in view of the low fitness of mentally retarded hemizygous males and heterozygous females. In the past, it has been proposed that the mutation rate may be unusually high, and that mutations occur exclusiv