1. Factors that lead to Reproductive Isolation:
Geographical isolation – physical barriers such as rivers or mountains separate a population
Temporal Isolation – timing prevents reproduction between a population
Behavioral Isolation – differences on courtship or mating behaviors

2. Identify which type of reproductive isolation is being described below: →Geographical isolation →Temporal Isolation →Behavioral Isolation T
___ 1. The Red-legged Frog breeding season lasts from January to March. The closely related Yellow-legged Frog breeds from late March through May. ___ 2. A mountain range prevents two types of goat from mating, causing the gene pool to become less varied. ___ 3. Female fireflies only flash back and attract males who first signaled to them with a species-specific rhythm of light signals. ___ 4. A forest fire causes the permanent separation of a group of deer from their native population, causing the small group to interbreed only with one another. G B G

3. Patterns of Evolution:
Divergent evolution – the accumulation of differences between related groups
Convergent evolution – the accumulation of similarities between unrelated groups
Coevolution – the process by which 2 or more species evolve in response to changes in each other.

4. Are the following pairs examples of divergence or convergence:
___ 1. ___ 2. ___ 3. ___ 4. C D
Both Mammals
Lives in Water Lives on Land
Platypus Duck
(Both lay eggs) D C
Venomous
Rhinosaurus Triceratop
Both have horns
Nonvenomous