Bone in mammals: Evolutionary mysteries: Bone in mammals is a compelling topic, and its presence and function in different species have been the focus of scientists. Why do some animals have ** bones but humans don't?Behind this seemingly bizarre question, there is a revelation of the wonder of mammalian evolution.
*Bone diversity** Bone is not ubiquitous in all mammals, it looks like a kind of "bony bonus", delicately suspended at the end. Different animals have different sizes and shapes of their bones, some as small as spikes and some as large as sticks, and this diversity is breathtaking. In mammals, most primate males have ** bones, while humans are a special case. The evolution of bonesHow did bones evolve?
A new study reveals the evolution of the bone. Based on the interrelationships between different animals, the study found that the first appearance of the bone was later after the differentiation of placental and placental mammals, and before the emergence of the most recent common ancestors of primates and carnivores. While the common ancestors of primates and carnivores have ** bones, it is speculated that species without ** bones, such as humans, may have been lost in the process of evolution.
Scientists have proposed several possible benefits for the presence of bone, such as stimulating ovulation in females, reducing friction, prolonging time, etc. However, humans do not have ** bones, which arouses people's curiosity.
It was found that during the evolution of primates, there was a correlation between the time of insertion and the existence of bone, and the relationship between bone length and male insertion time and the intensity of mate selection competition were also found. Why don't humans have ** bones?Scientists believe that humans have a shorter penetration time and males face less competition for mates, which may be the reason why humans don't have bones.
Although bonobos only take 15 seconds at a time, they still have bones, suggesting that different mate selection strategies may have contributed to the presence or absence of bones. **Evolution and function of bone**The evolution of bone is full of fantasy, revealing the diversity of mating strategies in the biological world. The presence of bones may be related to the species' mate selection strategy, and in the face of intense sexual competition, the larger the bones, the better.
Scientists have only just begun to study this field, and the function and evolution of bone still need to be further explored. ConclusionThe existence and function of bones have brought a lot of space to people, and the phenomenon of human beings without bones has also triggered the thinking of scientists. The evolution and function of bone is a complex and interesting topic, what do you think about the evolution and function of bone?Feel free to share your thoughts and opinions in the comments.
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