Tag: "dna"

Questions for "evolutionists" - chickens, eggs, protein and Everest

Continuing the long series on questions for "evolutionists" is a few questions from a reader I got. I assume they think their questions are compelling. They are not.

First up:

What came first, the chicken or the egg? If the egg; what came first, the embryo or the shell?

The egg came first. Let me explain why. At some point in the chicken’s evolutionary past, it was a different species. Scientists categorise modern domesticated chickens as Gallus gallus domesticus. Their domestication is estimated to have started around 10,000 years ago in East Asia. If we for the sake of argument define chickens or red junglefowl (Gallus gallus) as a different species at a point around 10,000 years ago when they started to become domesticated, there would have been a a time where a chicken's parents were just those wild red junglefowls. Of course from individual generations the differences are only slight. But differences do occur. Broadening the concept further, all birds are descended from dinosaurs, so at some point dinosaurs did lay eggs with birds in them. Obviously it's not as such fine a line and species change gradually, but if you have to draw a razor sharp line somewhere, it will fall between two generations.

A quick point on what came first out of shell or an embryo. An embryo, which is critical to a species reproducing, would have come first. You can reproduce without a shell, as many species do and have done in the past. If you evolve a shell and it helps you survive, bonus. But it's certainly not the first step.

What came first DNA or the proteins that make up DNA? Since DNA itself contains the code or instructions on how to make more DNA?

First up DNA is not made from proteins, DNA codes for proteins, you can think of proteins as carrying out all the jobs that need to be done in a cell, and DNA as what tells the proteins what to do. Proteins would have *probably* been around before DNA; however this is obviously cutting edge science, and without a time machine it will be difficult to determine. It's probably fair to say RNA and proteins co-evolved. Although the first life on Earth would probably have been a simple self-replicated module, similar to RNA.

Try these simple steps:

1. Google: "how old is mount everest"
2. Google: "how many inches does mount everest grow in one year".
3. 70 million x 2.4 = 168 million
4. Divide by a mile: 168 million / 5,280 = 31,818
5. Mount everest should be 31,818 miles high?

Very nice. But the Earth cannot be understood by such simple arithmetic. You also need to consider the different rates Mt Everest and the Himalayas would have been growing, or shrinking over the course of the last 70 million years. You also need to take into account the amount of erosion that would have been happening over the course of those 70 million or so years, and take into account its variability also. Lastly, you also need to take into account that mountains cannot get much bigger than Mt Everest because gravity will pull them down, essentially they'll shrink under their own weight. An asteroid can have a huge lump or mountain out of one side, but an object as massive as the Earth has a lot of gravity and it will tend to smooth itself out.