Q. Is celiac genetic? I have one son with celiac disease from my first marriage and me second wife is now pregnant,I was wondering what are the chances for this soon to be born daughter of mine to have celiac as well- if I maybe carry the genetic flaw and is there a way to find out? A. Celiac disease is a very common illness (about 1 in a 100 people suffer from it in different levels), and it is known to have a strong genetic connection. However, there is not one specific mutation that you can get genetic testing to see if you are carrying it. Your soon to be born daughter will have a higher chance than the regular population to suffer from the disease, but it does not necessarily mean she will.
While current results from ADHD genome-wide studies are far from conclusive, they do provide new directions and suggest research avenues to follow, the analysts say. Dr. Banaschewski comments, “To date, the findings from genetic studies in ADHD have been somewhat inconsistent and disappointing. Specific gene-based studies have similarly only explained a small percentage of the genetic component of ADHD. Despite the high heritability of the disorder, genome-wide studies have not shown extensive overlaps, with only one significant finding in the meta-analysis of studies [chromosome 16].” But he adds that “the latter approach is likely to redirect future ADHD research, given the apparent involvement of new gene systems and processes.”
At its most fundamental level, inheritance in organisms occurs by passing discrete heritable units, called genes , from parents to offspring.  This property was first observed by Gregor Mendel , who studied the segregation of heritable traits in pea plants.   In his experiments studying the trait for flower color, Mendel observed that the flowers of each pea plant were either purple or white—but never an intermediate between the two colors. These different, discrete versions of the same gene are called alleles .