speciation

Question 1

what is allopatric speciaition?

Answer 1

= speciaition that occurs due a poulation necoming genetucally isolated

Question 2

What is synpatric isolation?

Answer 2

= speciaition occuring within a population in the same area
= reprodutivley isolayed
= differences in behaviours
= random mutations may influence repriductive behaviour
= different courtship behavioiur
= so there is now gene flow between the 2 groups of the populations
=n reprooductlviey isolated, accumulutae different mutations, that their genetically different, unable to reporudce to priduce fertile offsprig.

Question 3

How do allopatric speciaition lead to the development of a new species?

Answer 3

= geohraphical isaoltation prevenys reproduction, due t geographical barrier
= both populatiosn accunukae different benevicial mutations, over time to help them survive the environemnts (natural selection) this leas to the accimulation of a different gene pool wiht different advantageous allee
s=
= so becom egneetically different that if the pioulations were to reunite, they would not be able to interbreed to produce fertile offsprig, so are two different species.