Although most people share the same genes, a difference of 0.1% can change a person's blood type or skin color. While we inherit some good genes, some unfavorable genes are often passed down from generation to generation. Recently, a popular health website identified the top ten shortcomings that genetics brings to humans. 1 Genetic abnormalities cause baldness Despite the prevalence of baldness, scientists still know little about its causes. Baldness is caused by abnormalities in several genes. Permanent baldness is called "alopecia". Because patients carry the "hair loss" gene, all the hair on their body will fall off. 2 Some people are not destined to drink milk Scientists discovered in the last century that lactose intolerance was common among residents in Asia, Africa and certain areas of southern Europe. Over the past 10,000 years, genetic evolution has enabled humans in regions with developed dairy industries to digest milk. 3. The trouble of "super ovulation" Fraternal twins tend to appear repeatedly in the same family. The mother in such a family often has a gene for "super ovulation," which causes her body to release multiple eggs during ovulation. 4. “Hunger-resistant” genes promote fattening One theory is that genes that helped our ancestors survive famine in the distant past are now backfiring today. Genes have now been linked to some familial obesity syndromes. 5. Violence is also hereditary Scientists have discovered a gene that can make someone violent. The researchers also found that boys' aggressive behavior was more likely to be inherited from non-aggressive antisocial behaviors, such as stealing other people's lunches. The effect of genes is more obvious in female thieves. 6 Special genes cause breast cancer The causes of most breast cancers remain a mystery, however certain genes, such as BRCA1 and BRCA2, can contribute to cancer. Women who inherit the gene are likely to develop the disease at an early age. 7. Acne can also be passed down from generation to generation Acne is also caused by genetics, and many boys with acne have a family history of the disease. If a parent has ever had pimples, their children are at a high risk of developing severe acne. 8. The harm of heredity of heart disease Heart disease, diabetes, stroke and high blood pressure often run in families. If parents suffer from heart and cardiovascular disease, their children are likely to suffer from the same disease in the future. In addition, the probability of inheritance of congenital heart disease is also very high. 9. Alcoholism is also hereditary About 50% of the risk of alcoholism comes from genetics, while the environment in which you grow up accounts for the other half. Alcoholism is thought to be a genetic syndrome, the result of multiple genes acting together. These genes each have different effects on the human body. 10. Color blindness “bullies” men More than 10 million people in the United States are red-green color blind, of which only 600,000 are women. The reason is that the gene responsible for the formation of red and green receptors is located on the X chromosome. Men only have one X chromosome inherited from their mothers, while women have two. For women, even if one gene is abnormal, the other can work alone. |
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