Fig. 4: Consequences of ignorance production in sexual selection.
From: The history of sexual selection research provides insights as to why females are still understudied

Although the higher frequency of extraordinary male ornaments in males may partly explain the prevalent male precedence (that is research starts with focusing on male-centered investigations or explanations and thereafter include female-centered equivalents), it is also partly due to gender bias. Such gender bias has delayed or hindered parallel work on females as well as led to disregard of existing research and alternative theoretical interpretations.