the percentage of the inheritance of obesity that is accounted for by genetic factors is about
Genetics of obesity Polymorphisms in various genes controlling appetite and metabolism predispose to obesity under certain dietary conditions. The percentage of obesity that can be attributed to genetics varies widely, depending on the population examined, from 6% to 85%.[6] As of 2006, more than 41 sites on the human genome have been linked to the development of obesity when a favorable environment is present.[7] The involvement of genetic factors in the development of obesity is estimated to be 40â€“70%. Some of these obesogenic or leptogenic genes may influence obese individuals response to weight loss or weight management.[8]
Gene In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gene–environment interactions. Some genetic traits are instantly visible, such as eye color or number of limbs, and some are not, such as blood type, risk for specific diseases, or the thousands of basic biochemical processes that constitute life.