Why do humans have intercourse




















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Still, the emotional component strikes on both the high end nr. Sexual pleasure is also highly dependent on your emotional state and mood. Getting quality sexy time requires a lot of external factors falling into place. Humans are, perhaps more so than any other animal, social beings. Our sexuality is closely intertwined with our social lives. By definition, you have to interact with another person to have sex. It can be used as a show of dominance, as a display of power.

Both sexes enjoy engaging in power plays, either traditionally or going against traditional sex roles. Sex is also closely regulated by social forces. Sexual shaming , minority gender stigma, and felt stigma are all ways socially-accepted ideals are forced upon the individual. Deviation from what is considered normal at the time is also usually punished in society.

Just imagine that — being told that your arousal is illegal. Each one serves to gather people in a group aware of all its members who have a common point of interest and share an emotional connection. He goes on to say that all interaction rituals have the same effects. So to recap: we have a bit of sex to procreate. We do it to show our feelings, we do it to break up, and for some ungodly reason, some people do it to spread STDs around.

We have sex because we want to move ahead in society. To become popular, to gain station, or the arm, ear and other bits of someone powerful. Sometimes we do it out in the open, and sometimes we have to hide in the shadows to be ourselves.

Stunningly charming pun connoisseur, I have been fascinated by the world around me since I first laid eyes on it. Always curious, I'm just having a little fun with some very serious science. Home Other Feature Post. Why do people have sex? A deceivingly simple question. January 29, Under normal circumstances, clones still win. In recent years a new explanation has started to take hold.

This is based on the discovery that all eukaryotes are, or at least were, sexual there are plenty of species that multiply by cloning, but they evolved celibacy only very recently. The logical conclusion is that sex evolved very early on in the eukaryote lineage, in a common ancestor of all living eukaryotes around 2 billion years ago. The new explanation claims that this is no coincidence: mitochondria made the evolution of sex inevitable.

How so? The key point is that mitochondria have their own genomes. This is a remnant of the complete genome of the free-living bacterium that was engulfed at the dawn of eukaryote evolution.

The symbiont also bombarded the host with parasitic jumping genes. In other words, the acquisition of mitochondria unleashed a bout of turbulent genetic disruption.

Under such high mutation pressure, the balance was tilted and sex became more advantageous than asexual reproduction. Any early eukaryote that evolved it would have outcompeted its asexual rivals, which were succumbing to unsurvivable levels of mutation. Mitochondria also explain why sex remains advantageous today. The mitochondrial genome encodes vital genes, but cannot do anything on its own.

It relies on the nuclear genome to make proteins and replicate its DNA, for example. That cooperation is what sex ensures. Because the mitochondrial genome accumulates mutations at a higher rate than the nuclear genome — about ten times faster in mammals — the accord between the two genomes gradually breaks down. That is the why of sex. The how, however, remains very unclear. The simplest eukaryotes — amoebas — have sex by splitting their genome in half and then cleaving themselves in two, with half a genome in each portion; these half-amoebas then merge with others to create new individuals.

That may be how the first sex was done. In broad brush terms, it is still how it is done. Sex just means ripping a genome in half and uniting it with another half-genome from someone else to create a new whole genome. Humans and most other animals achieve that by having two sexes, one of which dumps their half-genomes into the other through the act of copulation. Who said romance was dead? A species of yeast produces near-identical clones when it has sex.



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