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Shvoong Home>Social Sciences>Psychology>TOP 10 HEREDITARY TRAITS Summary

TOP 10 HEREDITARY TRAITS

Article Summary   by:rnmorales_07     Original Authors: RM; AP
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TOP 10 HEREDITARY TRAITS

1. ALCOHOLISM- children of alcoholics are not destined to be alcoholics too. But recent research reports about 50 percent of the risk for alcoholism is genetically determined.
2. BREAST CANCER- The cause of most breast cancers is still a mystery, however researches have discovered that mutations in particular genes, such as BRCA1 and BRCA2, cause some cancers. Women who inherit the mutation tend to get cancer early in life and in both breasts.
3. COLOR BLINDNESS- Ten million men in the U.S. cannot distinguish red from green. Yet the disorder only affects less than 600,000 American women. Why? The genes for red and green receptors sit near each other on X-chromosome. Men only have one X-chromosome, which they inherit from their mother. Meanwhile, women have two, and a normal gene can often balance out a defective one.
4. BULLYING- Next time you’re in the principal’s office with a pink slip for roughhousing on the p[playground, point the finger at your family. A gene that increases an individual’s risk for violence has been discovered.
5. OBESITY- super size fries and a heavy set of genes is a recipe for obesity. One scientific theory suggest the same genes that helped our ancestors survive famines are now working against people living in places where food is plentiful.
6. HEART DISEASE- A family history of heart disease, diabetes, stroke or high blood pressure isn’t good for your heart. Children of parents with heart and blood vessel diseases are more likely to develop them, too. Plus, a person with a congenital heart defect is slightly more likely to have a baby with a heart defect.
7. HAVING TWINS- Although identical twins are random events, fraternal twins pop up in families again and again. A mother doing double diaper duty carries a gene that makes her release multiple eggs during ovulation, called hyper ovulation.
8. ACNE- Go ahead and fault your parents for your pimples. Studies have shown that many school-age boys with acne have a family history of the skin condition. As well, having parents who endured a bad case of zits makes one more likely to suffer from severe acne, too.
9. LACTOSE INTOLERANCE- The Chinese distaste for milk was thought to be a cultural one, until scientists in the 1960’s discovered lactose intolerance in Asians, Africans, and Southern Europeans.
10.BALDNESS- Although baldness is common in men, scientists don’t understand much about why so little is going on up there. Genes do play a role, but your mom is not only one at fault. Baldness is likely due to abnormalities in several genes from one or both parents. People with a rare type of permanent baldness called alopecia unversalis, lose hair all over their bodies and carry defective ‘hairless’ genes’.
Published: February 21, 2008   
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