In the past, we have investigated a large number of ADHD genes (that is, specific genes who have one or more forms or alleles which correlate to the disorder ADHD at higher-than-normal frequencies). We have also previously looked at some of the roles of gender effects on ADHD. However, we have not dedicated much time to exploring the possibility that these two factors may, in fact, be related.
A 2008 paper by Biederman and colleagues on sexually dimorphic effects of ADHD genes may shed some light on this potential association. They highlighted a total of four different genes which may be of influence with regards to the onset of ADHD. Two of these four genes appear to exhibit more of an influence on males, and the other two may exhibit more of an effect on females.
These four gender-related ADHD genes are listed below:
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4 comments:
I think that a gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a polypeptide or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains. Genes hold the information to build and maintain an organism's cells and pass genetic traits to offspring, although some organelles (e.g. mitochondria) are self-replicating and are not coded for by the organism's DNA. All organisms have many genes corresponding to various biological traits, some of which are immediately visible, such as eye color or number of limbs, and some of which are not, such as blood type or increased risk for specific diseases, or the thousands of basic biochemical processes that comprise life.
Best regards,
Guillermo
A modern working definition of a gene is "a locatable region of genomic sequence, corresponding to a unit of inheritance, which is associated with regulatory regions, transcribed regions, and or other functional sequence regions ". Colloquial usage of the term gene (e.g. "good genes", "hair color gene") may actually refer to an allele: a gene is the basic instruction—a sequence of nucleic acids (DNA or, in the case of certain viruses RNA), while an allele is one variant of that gene. Referring to having a gene for a trait is no longer the scientifically accepted usage. In most cases, all people would have a gene for the trait in question, but certain people will have a specific allele of that gene, which results in the trait variant. Further, genes code for proteins, which might result in identifiable traits, but it is the gene, not the trait, which is inherited.
Regards,
Steven
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