Divergent / Allopatric Speciation

1. a what or what barrier separates a population into what that can no longer what (genetic changes what be shared)

a PHYSICAL or GEOGRAPHICAL barrier separates a population into GROUPS that can no longer INTERBREED (genetic changes WILL NOT be shared)

2. natural selection works on the groups what (the greater the environmental what, the greater the what between the groups)

natural selection works on the groups INDEPENDENTLY (the greater the environmental PRESSURES, the greater the DIFFERENCES between the groups)

3. in time, accumulated genetic what prevent what– meaning that what species have been what

in time, accumulated genetic DIFFERENCES prevent INTERBREEDING– meaning that DISTINCT species have been FORMED

none

none