When Did Dna Evolve?


How did RNA Evolve into DNA ?

How did RNA Evolve into DNA. When did it happen and why? and Please no religious stuff.

Sugar became deoxyribose by the loss of one oxygen atom at carbon 2.
uracil got replaced by thymine.It all happened by trial and error and due to selection.

Which pokemon evolves from which stones?

Fire Stone:
Causes Vulpix to evolve into Ninetales.
Causes Growlithe to evolve into Arcanine.
Causes Eevee to evolve into Flareon.
Causes Pansear to evolve into Simisear.

Water Stone:
Causes Poliwhirl to evolve into Poliwrath.
Causes Shellder to evolve into Cloyster.
Causes Staryu to evolve into Starmie.
Causes Eevee to evolve into Vaporeon.
Causes Lombre to evolve into Ludicolo.
Causes Panpour to evolve into Simipour.

Thunderstone:
Causes Pikachu to evolve into Raichu.
Causes Eevee to evolve into Jolteon.
Causes Eelektrik to evolve into Eelektross.

Leaf Stone:
Causes Gloom to evolve into Vileplume.
Causes Weepinbell to evolve into Victreebel.
Causes Exeggcute to evolve into Exeggutor.
Causes Nuzleaf to evolve into Shiftry.
Causes Pansage to evolve into Simisage.

Moon Stone:
Causes Nidorina to evolve into Nidoqueen.
Causes Nidorino to evolve into Nidoking.
Causes Clefairy to evolve into Clefable.
Causes Jigglypuff to evolve into Wigglytuff.
Causes Skitty to evolve into Delcatty.
Causes Munna to evolve into Musharna.

Sun Stone:
Causes Gloom to evolve into Bellossom.
Causes Sunkern to evolve into Sunflora.
Causes Cottonee to evolve into Whimsicott.
Causes Petilil to evolve into Lilligant.

Shiny Stone:
Causes Togetic to evolve into Togekiss.
Causes Roselia to evolve into Roserade.
Causes Minccino to evolve into Cinccino.

Dusk Stone:
Causes Murkrow to evolve into Honchkrow.
Causes Misdreavus to evolve into Mismagius.
Causes Lampent to evolve into Chandelure.

Dawn Stone:
Causes male Kirlia to evolve into Gallade.
Causes female Snorunt to evolve into Froslass.

Why did animals evolve reproductive organs?

So I was reading another question and it made me think about this question here. Why did we as a species, and almost all other species of animals evolve reproductive organs when we could just asexually reproduce or use mitosis or whatever. Wouldn't mitosis be more efficient?

mitosis is more efficient in terms of quantity of offspring. But it does not increase their chances of survival, which is the important factor in evolution.
The only way how asexual lifeforms can evolve, is by mutation of their own DNA.
Sexual recombination on the other hand offers a variety of new possibilities to improve the quality of the offsprings DNA.

many theories and consideratons are listed on wikipedia
http://en.wikipedia.org/wiki/Evolution_of_sexual_reproduction

Does Qwilfish evolve on pokemon pearl? and if they do, how?

I got a qwillfish from iron island and im wondering how to evolve it (If it does) and another question is when or how does Aron evolve?

Quillfish will not evolve. As it does not have any previous or further evolution stages.

Aron on the other hand will evolve at lv32 in Larion. Who then goes on to evolve into the very strong Aggron at level 42

Hope this helps :)

When should i evolve my Vulpix on Soul Silver?

I already have a Fire Stone.. When should i evolve it?? Should i wait and grow it a little bit or just evolve it now??

your choice, once you have the moves that you want then evolve it, or if you dont care what moves it is going to learn because you want to teach it TM's then evolve it straight away. I usually evolve a pokemon that needs a stone around the 20-30 level because thats when most pokemon evolve into their first evolution

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