AP BIOLOGY

EVOLUTION

TYPES OF SELECTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?
A
Allopatric
B
Sympatric
C
Complex
D
Covergent
Explanation: 

Detailed explanation-1: -Sympatric Speciation-A speciation in which new species evolve from a single ancestral species while inhabiting the same geographic region. Ex)Two groups of Orca occur in the same habitat but are avoiding each other and they do not interbreed. They have different diets, vocal behaviour, and social structures.

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: -A possible example of sympatric speciation is the apple maggot, an insect that lays its eggs inside the fruit of an apple, causing it to rot. As the apple falls from the tree, the maggots dig in the ground before emerging as flies several months later.

Detailed explanation-4: -temporal isolation, in biology, a type of reproductive isolation mechanism among sexual organisms in which the differences in the timing of critical reproductive events prevent members of closely related species, which could otherwise breed with one another, from mating and producing hybrid offspring.

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