Eye color is a complex genetic trait determined by pairings of genes passed on from each parent. Scientists once believed eye color was determined by a single gene, but advances in genetic research ...

Here is some care advice that should help. Long-acting allergy medicines (such as Zyrtec) are best for nasal allergies. No prescription is needed. Age limit: 6 months and older. Zyrtec dosing for 6 ...

No prescription is needed. Age limit for Benadryl: 1 and older. If Benadryl is needed for more than a few days, switch to a long-acting allergy medicine (such as Zyrtec). Age limit: 6 months and older ...