Mechanisms Of Evolution (Part 2 of 2)

A short easily understood tale of how evolution really works.

Category:

Science & Technology

Tags:

• Mechanics
• Evolution
• Darwin
• mechanism
• species
• genome
• DNA
• chromosome
• fusion
• duplication
• deletion
• natural
• select

[jhonnygilbert]

Hi, Videos are really great and enlightening. I know that this video does not want to deal with the Q of "Intelligent Design". But I am curious that why is that "mating is random". Because natural selection involves making mating decisions which are intelligent. May be this is highly complex random process as discussed in "Complexity". Humans themselves have evolved technologically which is due to so called "Intelligence". Can you throw some light or pointers to this. thanks.

[cassiopeiaproject]

@jhonnygilbert Of course mating is NOT random in the real world. But this video is demonstrating that natural selection ALL BY ITSELF is sufficient to drive evolution in a direction to fit the environment. Intelligent Design is not science in any way and should be discussed in a Theology forum and not a science education setting.

[ilikekickassidea]

Thx for the explanation...

Now I get it. More different in DNA, result in new species like poddles and bulldogs are also different species (?)

Great videos with easy explanation..

[cassiopeiaproject]

Poodles and bulldogs can interbreed and have fertile offspring, so they are the same species. When enough changes accumulate so that organisms can no longer interbreed and produce fertile offspring -- that's usually when they are deemed to be different species.

[ilikekickassidea]

But its just the color right, not a new species.

You try to explain how a new species evolve, but I didn't get it..

[cassiopeiaproject]

We focused on a single trait and a single environmental pressure and watched the DNA change. In real organisms, every trait undergoes similar pressure from the environment. Change enough traits, change enough DNA, and you have a new species. At first, it is just color or size or shape of the nose -- like poodles and bulldogs. But given enough time, you get foxes and wolves -- different species.

[Axer2012]

When they "mate," I like the little noise that goes along with it. Hehe.

[TCupUK]

What happens when the predator evolves its vision to be able to see all the DarBabies? Maybe this is why predator birds have such great vision, to stop those little shits from hiding.

Sounds more like a mechanism to equilibrium to me than evolution.

[jhonnygilbert]

@cassiopeiaproject hi, thanks for ur reply. When I said Intelligent Desing I did not mean anything supernatural or "existence of God". All I wanted to know is what is the scientific reason of apparently Intelligent beings or systems like how do beings know which mates are suitable in an environment? How does cells know how to replicate? How do we have "fear" and "greed" to increase our chances of survival etc. Thanks.in advance.

[Xadreos]

Holy crow am I enthralled by that. Some of your videos such as this one are SO exciting! Keep posting, this stuff is really cool.

[KoopaKontroller]

Dar babies. All that needs to be said lol.

[barakameek]

@ilikekickassidea dont give up on trying to understand....you will get it sooner or later get it.....

[vldmr0tube]

@Elliandr Spontanious Manifestation has never beeen a scientific theory. It came from medeval times and no one actually really bothered checking it until Louis Pasteur.

Advanced scientific theories are never completely disproved, that's what makes them useful. They only can be disproved partially or be upgrated. Evolution will never be disproved, just like Newton's law of gravity.

[Elliandr]

The main problem with this model of evolution is that it is too slow to be practical. In geological history, the most significant leaps of evoltution are made during calamity. In Atavism we see that the DNA of previous forms are intact but switched off. in Epigenetics is is observed DNA can change in real time. In theory, it is possible for an entire species to change completely in just one generation through the epigenetic model. Which random mutation models would not allow.

[Elliandr]

@TheProf1988 LMAO! ok. you do that. That's typically what people do when they disagree with an argument. And I really don't care if you respond. These are my ideas and observations and, as I recall, you replied to me first for most of it.

But on a more serious note, to any reading: The length of a day is based on the rotation of the earth. The rotation of the earth is based on the tilt of the axis and the presence of absence of a moon. These factors change, even today, so one can't measure it