The bad genetic heritage

Children inherit a lot of traits from parents, which, unfortunately, sometimes only bring trouble. It is predisposed to certain diseases and defects. Site livescience.com gathered in a top worst genetic heritage. The first place is situated alcoholism.

Recent research indicates that 50% of cases lead to alcoholism is genetic, while the remaining half are caused by environmental factors.

The disease is considered quite complex in terms of genetic, genes that affect individuals differently.

At No. 2, came breast cancer. The causes are of a mystery, but researchers found that mutations of certain genes can cause certain cancers. Women who have inherited these mutations tend to be young and sick of being affected both breasts. Men with genetic mutations have a higher risk of prostate and pancreatic cancer.


And daltonism is a genetic disease. United States alone, ten million men can not distinguish red from green. unlike them, are affected less than 600 thousand women. Why? The genes for red and green receptors are positioned near one another on chromosome X.

Men have only one X chromosome on which it inherited from the mother, while two women and a normal gene can dominate over the problems.

At No. 4, violence. It was discovered a gene that increases the risk of an individual to be violent. The researchers believe that for boys, aggressive behavior is most likely inherited, compared with non-aggressive antisocial behaviors like stealing.

At No. 5, obesity. Portions "super size" and a set of genes, is the recipe for obesity. A scientific theory suggests that the same genes that have helped our ancestors survive famine, now working against people who live in places where food in abundance.

Genes have been shown to cause several types of obesity, such as BARDET-Biedl syndrome and Prader-Willi. But today, many obese have reached this situation for more and eat unhealthy.

Heart disease is just the place 6. Your heart can be hurt if their predecessors had heart disease, diabetes, heart or blood pressure. Children whose parents have heart problems and blood circulation and are more likely to inherit.

At No. 7, the birth of young twins. A mother who bears twins born one gene cause removal of several ova during ovulation. Although a man who wears gene is not always the father of twins, daughter transmission of the features you can turn into a grandfather of twins. Thus it happens that the twins to appear in different generations.

In places 8 and 9, acne and lactose intolerance. Studies show that many school boys who suffer from acne in the family history. In terms intolranta lactose, has long believed that many Chinese do not drink milk because of a cultural problem, until 1960, when scientists found that Asians, Europeans and South Africans have the disease.

In last place in the top, far from negligible, was bald. Although common in men, scientists do not understand much about what is happening. Genes play an important role. It seems to be an anomaly in several genes inherited from one or both barinti.