Genetics don’t have a part to play when it comes to certain subjects like humanities or sciences. One of the reasons could be by mere chance that students developed strong foundations in science and humanities since primary school. These strong foundations could have led to a development in interest for these subjects at an early age, prompting them to study these subjects even more. This in turn leads to them being more confident in the subject, spending even more time on them. Over time, their subject of choice will naturally become their strongest subject to score in proving, genetics did not play a part in their success.