Reaching high academic ranks is difficult in science, given the scarcity of research funding and competitive pressure for high-impact publications. Some scientists however are born with a privilege that will make it relatively easier for them to reach those highest ranks.
Being a man in STEM means you are more likely to get an answer from your prospective PhD supervisor, to get this fellowship you applied for, and to be chosen based on a resume that is equally as good as that of your female peer. For women in STEM, as in many other fields, breaking the glass ceiling also means breaking into a male-dominated culture, in which the objectivity of even a scientist is blinded by gender.
This article describes how gender bias in STEM has manifested itself and is still rife in institutes and companies, as shown by two recent examples making the headlines.