6 -- Natural Selection Made Easy

Explains natural selection in simple terms. A must for anyone who is confused by the Theory of Evolution, and wonders why it's taught in classrooms. This video is part of the 'Made Easy' series that explains the history of our world, from the Big Bang to the human migration out of Africa.

(Music: Sergey Prokofiev's 'Peter and the Wolf')

Category:

Education

Tags:

• evolution
• creationism
• potholer54
• evolutionist
• Darwin
• Darwinian
• God
• Christian
• science
• atheist

[Misterb0z]

@MrPeterpott "2. A group of long-necked and short necked animlas that live together and mate together will have both long-necked and short necked children" Yes, and the short-necked ones are less likely to survive to an age where they can reproduce in an environment where having a longer neck is an advantage. Hence the allele frequency in the population will change in favour of the long-necks. That's called evolution.

[Misterb0z]

@MrPeterpott "1. We don't see this variation thingy happening. People have been people for as long as we know."  Yes, you're right there. Every single person on the planet is exactly the same. Indistinguishable. I keep committing adultery inadvertently due to the fact that my wife is identical to every other female human. Well said. Maybe.

[MrPeterpott]

There are many problems with this. 1. We don't see this variation thingy happening. People have been people for as long as we know. 2. A group of long-necked and short necked animlas that live together and mate together will have both long-necked and short necked children. The video pretends that Long-Necked parents give birth to long-necked children. This is not so. Of course the video presenter is slick and glosses over details that ruin his fantasy.

[lalabobjimbenbowen]

How could anyone disagree with this?

[Robertsonsd]

I killed a six pack about 15 minutes ago, and this is still crystal clear.

[dazzling5909]

Nice explanation

[danoso0931]

@leviterande Anyway, in Lenski's experiment, after 20 years, one of his cultures of bacteria suddenly began to digest citrate. Turns out, this process required 2 cumulative mutations, so if a culture developed only the first mutation, it could not digest nitrate. So, at some point in one of those cultures, that mutation stuck around via genetic drift.. then a second mutation came along and boom!, the population exploded. Genetic drift is another mechanism for natural selection.

[danoso0931]

@leviterande Sure it's astronimcal... but so is wining the lottery. If you have, as you say, millions of individuals, now spread them over MILLIONS of years too. Then it is not so surprising. If you doubt this, check out Lenski's long term evolution experiment, where he does just that on bacteria. Plus, feathers didn't just spring up as we know them today.. it was gradual. In fact, we have fossils showing the several steps necessary to go from a scale to a modern feather, so we know the stages.