Is this true: Turns out, we are all attracted to certain DNA that would increase the survival rate of our children. So THATS why you like that certain person.
I dont think it is.
I dont think it is.
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I have read several scientific articles supporting this theory that you stated. It's called kin selection or the genetic similarity theory. Here is a small bit I wrote last fall for a biology class:
Some species interact with others in their population on a regular basis. When these interactions occur there is usually a trend that organisms will help others that are directly related to them before others of the population. This phenomena is regarded as kin selection. It is shown in humans, as well as many other species, as families usually get priority over friends. In the wild these interactions lead to more of the families genes being passed on, even if it is deadly or harmful to an individual.
Kin selection can be defined as a selective behavior that could lower the individual’s fitness but increase the chance of reproductive success in its relatives. An example of this Kin selection, or act of Altuism, can be seen in flocks of geese, or families of prairie dogs. These animals stick together to increase their survival. These groups help each other through the collective vigilance when looking for predators. When a predator is sighted, one of the individuals will raise an alarm, which decreases its chance of survival by attracting attention to itself but raising the survival chance of the vast majority of the group by alerting them to the danger.
As two organisms are further and further related there is less of a chance of kin selection to occur. If a dog, Spot, is another dog’s, Daisy, father then Spot will be very willing to help Daisy because half of Spot’s DNA is in Daisy. Daisy’s child Max is less likely to receive help from Spot because Max only carries .25 of Spot’s DNA. There is an equation that relates the cost to the individual, the benefit of the other individual to how closely they are related. This is called Hamilton’s rule and is shown as r>C/B, where r is how closely the two organisms are related, B is the benefit of the recipient and C is the cost to the donor. If the ratio of C and B is less then r then it is likely the behavior will be shown.
Some species interact with others in their population on a regular basis. When these interactions occur there is usually a trend that organisms will help others that are directly related to them before others of the population. This phenomena is regarded as kin selection. It is shown in humans, as well as many other species, as families usually get priority over friends. In the wild these interactions lead to more of the families genes being passed on, even if it is deadly or harmful to an individual.
Kin selection can be defined as a selective behavior that could lower the individual’s fitness but increase the chance of reproductive success in its relatives. An example of this Kin selection, or act of Altuism, can be seen in flocks of geese, or families of prairie dogs. These animals stick together to increase their survival. These groups help each other through the collective vigilance when looking for predators. When a predator is sighted, one of the individuals will raise an alarm, which decreases its chance of survival by attracting attention to itself but raising the survival chance of the vast majority of the group by alerting them to the danger.
As two organisms are further and further related there is less of a chance of kin selection to occur. If a dog, Spot, is another dog’s, Daisy, father then Spot will be very willing to help Daisy because half of Spot’s DNA is in Daisy. Daisy’s child Max is less likely to receive help from Spot because Max only carries .25 of Spot’s DNA. There is an equation that relates the cost to the individual, the benefit of the other individual to how closely they are related. This is called Hamilton’s rule and is shown as r>C/B, where r is how closely the two organisms are related, B is the benefit of the recipient and C is the cost to the donor. If the ratio of C and B is less then r then it is likely the behavior will be shown.
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