Why is there no "bone" in the human penis?

ByAndrew

Many mammalian males have bones in their penis, but humans lose their bones from the penis by the process of evolution. I do not know exactly why bones are necessary for penis, but the result of studying that secret has been announced.

Postcopulatory sexual selection influences baculum evolution in primates and carnivores | Proceedings of the Royal Society of London B: Biological Sciences
http://rspb.royalsocietypublishing.org/content/283/1844/20161736


Humans no longer have a penis bone because we do not need to have as much as sex - The Verge
http://www.theverge.com/2016/12/14/13956230/humans-penis-bone-sex-bacula-evolution-primate-polygamy

In a research published in the scientific journal Proceedings of the Royal Society of London B, the research teamPenis boneWe followed the history of evolution. It is known that animals that acquired penis bone at first were born between 155 million and 95 million years ago and that ancestors common to all primates and carnivores had penis bones I will.

In modern times too many mammals and primates such as chimpanzees and bonobos close to humans have penis bones, rather humans are included in exceptional categories. Regarding why humans lost their penis bones, chimpanzees and bonobos are polygamy, and it is generally said that human beings are monogamous. I do not know exactly why the penis bones exist scientifically, but in one opinion it is said that penis bones support the penis during sexual intercourse, which increases sexual intercourse.

The research team investigated the evolution of penis bones for 27 generations and found that polygamy animals tended to have thicker penis bones. For this reason, penis bone is thought to play an important role for species requiring more intercourse. Polygamy seeds are advantageous as long as you can intercourse with your partner because fierce competition is done to leave stronger DNA. On the other hand basically the one with a single grandfather system lost penis bone as unnecessary.