Populations of Larus gulls around the North Pole show an unusual pattern of reproductive isolation. Each population is able to interbreed with its neighboring populations, but populations separated by larger geographic distances are not able to interbreed. This type of species complex is known as a:
a. ring species.
b. circular species.
c. contiguous species.
d. linked species.
e. peripatric species
Ans: a. ring species.
Biology & Microbiology
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