An organism can be defined as a gene’s way of making another gene and vice versa. But that doesn’t mean all activities of an organism are directly based on the concept of self replication. Every Organism is programmed by its genes to hold two kinds of goals- a long term and a short term one.
The short term goal is to find immediate possibilities of survival. This can be eating, drinking, gathering food, hunting, building a house/nest,fucking(!), protecting oneself from immediate threats and predators. For this, the genes work thru proteins. Proteins translate these orders into chemicals called neuro-transmitters and hormones. They in turn bring up thoughts, intentions and the “urge” to perform tasks. These hormones acting on various parts of the body result in an increase or decrease in heart beats, blood pressure, bowel movements, erection , sexual pleasure or even ejaculation and orgasm. These feelings evoke fright or pleasure sensations in the brain as is the condition. The important fact is that these short term goals and the strategies to execute them are basically the same in higher and lower animals and even plants.
The long term goals for survival are different for various groups of life forms; their strategies too vary very much. Long term goal is actually to ensure the SUCCESS of the GENE and its relative genes. Such a cooperation ensures ones own survival. Take for example the typical human value of “helping others at the expense of ones own life”(called ALTRUISM in evolutionary jargon). This is actually a mechanism that ensures survival of the other members of the clan/family that share the same genes. A person ascending to political power, subconsciously is satisfying the age-old ego of the ALPHA MALE.
Another example of an evolutionary mechanism with long term goal: Studies recently showed that the Xq28 region of the X chromosome can cause a propensity towards homosexuality.
In some species, homosexuality is not very common – around 1 to 10 per cent of all mating. In others, such a Bonobo monkeys, homosexual mating occurs as often as heterosexual mating. In some species only males participate, in others only females, in still others both sexes. Sometimes homosexuality is associated with pair bonds that last for years, and in others with short-term courtships.
Sometimes, as with Bonobos, same-sex cooperation provides group security and access to food that females need to successfully rear their young. For others, such as male Savanna Baboons and probably some Whales, it provides the allies they need to survive conflicts so that they may later mate. But the unifying principle is the same – homosexuality cements relationships that are crucial for a successful life (exactly the opposite occurs in human society).
So, as i was saying, even though every single act of individual in the society is a reflection of the sexual drive, we often don’t feel that direct effect immediately. Thats b’coz our culture has influenced the ways in which our genes express themselves. For example, we train ourselves right from young age to hold our urges and wait until we have settled to establish a home and a living. This act of celibacy is a cultural trait that has a long term goal of making the future of the family/clan closer to success. Genetically programmed minds that submit to religious ideas actually is, a way of the gene to maintain and protect a family/clan , thru cooperation.