Question

refer to the table showing four traits for five different hypothetical pairs of salamanders.
species pair hybrid fitness dispersal rate (meters/day) size (grams) coloration
a and b high 0.8 46 dark
c and d moderate 1.1 23 light
e and f high 1.9 60 dark
g and h moderate 0.7 29 light
i and j low 0.5 34 light
all other things being equal, which species pair would likely form the most narrow hybrid zone?
a and b
c and d
e and f
g and h
i and j

Explanation:

A narrow hybrid zone is more likely when hybrid fitness is low as it limits the spread of hybrids. Among the given pairs, species pair I and J have the lowest hybrid fitness. Low - hybrid fitness means less successful hybrids, restricting the area where they can survive and reproduce, thus forming a narrow hybrid zone.

Answer:

I and J