This journal studies two mechanisms of sexual selection; male–male competition and female choice and the role they play on heritable traits. The experiment showed that the most commonly inherited trait was body size. This type of sexual selection appeared to be linear across different species. the most common trait where this occurred was body size, and selection was typically linear. The results illustrated the idea that male-male competition and female choice were more likely to be opposing when thus sexual selection occur sequentially. Furthermore, results show that secondary sexual characters have a greater chance of experiencing this opposing mechanisms of sexual selection. The study suggests that future research should be conducted on