The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?

TYPES OF SELECTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	behavioral isolation
B	hybrid sterility
C	temporal isolation
D	mechanical isolation

Explanation:

Detailed explanation-1: -Geographical Isolation (allopatry) The proximity of the various islands has permitted enough migration of Darwin’s finches between them to enable distinct island populations to arise. But the distances between the islands is great enough to limit interbreeding between populations on different islands.

Detailed explanation-2: -Orca. The divergence of “resident” and “transient” orca forms in the northeast Pacific is an uncommon example of sympatric speciation. Despite living in the same water, orcas avoid each other and do not interbreed. They are different in many ways like having different diets, vocal behavior, and social structure.

Detailed explanation-3: -What evidence does speciation provide for the theory of evolution by natural selection? Speciation can show us that new species don’t choose to adapt, but have changed due to diverging from an original species due to reproductive barriers.

There is 1 question to complete.

AP BIOLOGY

EVOLUTION

TYPES OF SELECTION