Obviously, the cost to sequence a genome depends on its size. The discussion below is focused on the human genome; keep in mind that a single 'representative' copy of the human genome is ~3 billion bases in size, whereas a given person's actual (diploid) genome is ~6 billion bases in size.
Alternatively, EPA has a more beneficial effect on lowering overall LDL (bad) cholesterol. In the cognitive domain, DHA appears to offer greater mental benefits. DHA has been suggested to be more effective in improving overall cognition and preventing cognitive decline in healthy older adults.
DHA, scientifically known as docosahexaenoic acid, is a type of omega-3 fatty acid. It is the major omega-3 fatty acid of the central nervous system and retina. It comes from sources such as salmon, tuna, herring and mackerel. During pregnancy, the need for DHA increases because of an increased demand from the baby.