Maricella was born several days ago, and her pediatrician has observed that she has almond-shaped eyes and a fold over her eyelids. in addition, her head, neck, and nose are smaller than other babies of her birth weight. it is most likely that maricella has an extra of the pair of chromosomes.

Maricella was born several days ago, and her pediatrician has observed that she has almond-shaped eyes and a fold over her eyelids. in addition, her head, neck, and nose are smaller than other babies of her birth weight. it is most likely that Maricella has an extra 21 chromosome.

Down syndrome which is also known as trisomy 21. It is caused by an extra chromosome 21.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the areas around the equator