The changes influence genes which help form and maintain connections between brain cells.

这些变异所影响的，是那些协助建立和维系脑细胞之间的联系的基因。

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To biomedical researchers all over the world, twins offer a precious opportunity to untangle the influence of genes and the environment—of nature and nurture.

对世界各地的生物医学研究人员来说，双胞胎提供了一个宝贵的机会，来解开基因和环境——也就是先天和后天的影响之谜。

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He points out that more than 200 genes influence weight.

他指出，有200多种基因会影响体重。

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Researchers in the United States say drinking a lot of alcohol over a short period may influence genes involved in bone formation.

VOA: special.2010.08.31

Genes can influence many things, from whom we look like to what we eat to possible treatments for diseases.

VOA: special.2010.03.23

While antismoking campaigns which focus on teens may be useful, an important aim is to determine the ways in which these specific genes influence progression to begin smoking, and to further evaluate whether medications currently on the market which reduce cigarette cravings have any influence on these high risk genes.

FORBES: Genetic Factors Linked to Smoking Addiction in Teens

Traditional methods of estimating the influence of genes and the environment on intelligence have largely been limited to comparisons between people who are related, such as identical or fraternal twins.

WSJ: Intelligence Changes Linked to Genes

Dr Breslin and his colleagues want to find out how genes influence human perception, particularly the senses of smell and taste and those (warmth, cold, pain, tingle, itch and so on) that result from stimulation of the skin.

ECONOMIST: Twin research