Natural Selection?

Question

Help me understand Natural Selection of Evolution theory. For example, if there was a predator attacking a human village and I was in love with a girl who couldn't run fast enough from the predator, I would dump her and look for a fast running girl? and our children would be fast runners. And the children we had that where slow we would abandon? and noboday would want to have offspring with them?

Answer 1

It does kind of sound silly, doesn't it.

Answer 2

The fact that you put this scientific topic in a "religion and spirituality" topic is very telling.

The definition of Evolution as defined in Darwin's work is incomplete. It doesn't, for example, talk about the later additions such as Hamilton's Rule which states:

RB − C > 0

where

R = the genetical relatedness of the recipient to the actor, usually defined as the probability that a gene picked randomly from each at the same locus is identical by descent.
B = the additional reproductive benefit gained by the recipient of the altruistic act,
C = the reproductive cost to the individual of performing the act.

Only when C is large enough for RB - C < 0 to be true, will an organism not save another. In human societies, C is almost always negligible. Therefore, if a predator was to attack a human village and your girlfriend wasn't fast enough, that is not an excuse to dump her. Especially when you consider that all predators known to attack humans can be easily killed outright by a settlement full of humans.

Let's not forget the fact that there is virtually no selection pressure for fast human beings.

Answer 3

There are too many factors to consider in this question. Leave out love, start over. The village is being attacked by a predator. Everyone runs. The ones who run fastest don't die. This enables the faster runners to pass on the genetic trait of greater speed to the children.

In the case of humans, instead of getting faster we got smarter over time.

Answer 4

Choosing mates based on "attractive" traitis classified as sexual selection.

Natural selection based on the predator model you described is simpler. The predator gets the slower people in the village so only the faster ones are left to choose from.

Answer 5

Um, no.

You would be eaten by the lion, and nature would select the lions for survival.

I used to watch articles about a group of lions in an African basin. National Geographic had noted that this group lived in this basin and couldn't migrate out. The total number of lions was under 100, and since they were forced to breed with each other in such small numbers, the effects of inbreeding were already evident.

Natural selection refers to a set of circumstances in nature that will lead to a species' success or failure. In this case, the lions will die out due to natural circumstances. Their genetic makeup will be lost to the world, and all other lions remaining are by default selected by nature ("natural selection") for survival.

Answer 6

Environmental pressures act on every species-within each species certain animals will be better suited to survive perhaps because they are stronger or faster and those are the ones that will live to pass on their genes to subsequent generations and thus enhance their survival chances. You can misrepresent it any way you like but a fact is a fact and there is no question that evolution of species by means of natural selection occurs-creationists don't need to like it but they aren't able to challenge it.

Answer 7

The process is a bit more slowly developing than that. The fastest of your offspring would probably be more likely to survive than the slowest, but it is not a matter of conscious choice.

Answer 8

Speed isn't necessarily the best example. What if your children were weak, and there was no adequate medical treatment? They would likely die before even reaching a reporductive stage.

And if you want to save the slow-running girl, that's all you. But if your children are slow, who knows if there will be someone there to save them?

Answer 9

on a very simplified level, yes. Natural Selection says that the environment will encourage the survival of the fittest (not necessarily the most physically able).

Personally, i would marry the fast one (assuming she is hotter because she is faster, dunno - lol). Anyway, if u are so in love with the slow chick, perhaps she is worth die'n for, dunno again.

Answer 10

fight or flight

If she's a slow runner, she better learn to defend herself by some other means, or else she's gonna be somebody's lunch.

The strong live, the weak die, and that's the sad truth.

Answer 11

This is the wrong category, Budd. You need the science category. And no, evolution does not work like that. please look more into it. you can find out about it at your local library.