Unknown Story

Allopatric Speclation
Hey lets live some where together.
I am thinking about living away from you.
The Population for T-Rex's resulted in geographical barrier (canyon) since they are living far away from each other.
What are they yammering about?
Bro! Come over here. It's nice here.
Dude! This place has more land.
The dinosaurs are exposed to different conditions, thus natural selection occurs
and the two populations adapt to their different conditions.
The traits of the two different populations will occur as a result of one developing the gene of the individual.
The two populations separated. Founder effect resulted which is "the reduced genetic diversity which results when a population is descended from a small number of colonizing ancestors."
Bye. Have fun living where it's cold.
Genetic drift occurred "variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce."
If only you'd listen to me. It's too hot up there.
Over time, the two different populations differ. The T-Rex's can reproduce, but if so, they cannot cross over (they can't reproduce with one another."
Who are they?
Who are we? Who are you?
The two groups of T-Rex's have become different species and speciation has occurred. The birds in the area could move freely and had no barrier, thus could interbreed as usual and did not experience speciation.
Ever heard of biology?

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