In the year 2317, a group of human pioneers decide to colonize mars. the distance between mars and earth prevents the possibility of new members joining the colony or the members of the colony interbreeding with humans on earth. this situation is an example of:

Founder Effect

Explanation:

Founder Effect Definition

The founder effect occurs when a small group of people move away from the original large population to form their own small population far away from the original population.

This means even their resemblance will begin to change as they start to resemble the founder of the small group and they will no longer look like the original population since there is no longer a chance to interbreed.

so you know what happened be fore you were alive

explanation:

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'