-new species formed from a small pop isolated at the edge of a larger pop
-version of allopatric & happens when one of the isolated pops has very few individuals
-ex: intrepid fruit flies venture off mainland on bunch of rotting bananas, banana bunch washes up on island:
1. now geographically isolated
2. rare genes survive (by chance carries rare gene from mainland and causes variation in mating dance and another to male genitalia (founder effect))
3. gene frequencies drift- those diffs drift to fixation over generations
4. more changes- sexual selection causes unique reproductive features
-changes improve male/female genitalia fit, and nat. sel. favors those suited to island climate & food.
5. speciation- flies reproductively isolated from mainland flies

Peripatric speciation

Explanation:

Peripatric speciation usually is an occurrence which happens when a small group of individuals break off of the main group to form a new species. This is similar to allopatric speciation, in this case, the two groups are separated by physical barriers such as mountain ranges or waterways, making it almost impossible for the two groups to interbreed.

There is always a special gene in the smaller group that had been isolated from the parent group. This special gene could allow the particular species to develop thicker fur, longer limbs or even, in extremely rare cases, an entirely new body part.

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.