Example sentences of "[noun sg] have have a important [noun] " in BNC.

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1 A high proportion of affected subjects are therefore compound heterozygotes rather than homozygotes , although particular mutations may occur with a frequency of over 60% in certain populations and there may be close association with particular haplotypes , indicating that founder effect has had an important influence on the distribution of mutations across nations .
2 Conflict in the employment relationship has had an important influence on theories of industrial relations .
3 Table 4.4 , which summarises the main studies , shows that they all agree that regional policy has had an important effect on job creation though they disagree on how important it has been .
4 Recent developments in game theory have had an important impact on the way we interpret these models .
5 Over the years The Trades House has had an important role to play in promoting trade and industry in the city .
6 The complexity of modern technology has had an important influence on the scale of life in modern society .
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