potential exam 6 questions Flashcards
1
Q
what phenomenon is most likely to cause rapid speication?
A
-an error in meiosis that leads to a duplication of chromosomes in gametes (similar to polyploidy)
1
Q
which pattern in fossil record best represents adaptive radiation in a lineage?
A
many splits in lineages (speciation events creating new branches)
2
Q
what evolutionary mechanism is the biggest driver of rapid speciation when new ecological opportunity is the trigger?
A
natural selection
3
Q
what is usually a common precede adaptive radiation?
A
-colonization of new areas
-evolution of key innovations
-mass extinctions
4
Q
what characteristics are shared across colonization, evolution, and extinctions that can precede adaptive radiation?
A
-low levels of competition with other taxa
-availability of new resources
