Ornithologists visiting an island find two species of birds that appear nearly identical except for bill size. Which of the following is the most likely explanation for their discovery?
A) The birds need camouflage for protection from predators.
B) Coevolution of the two species has resulted in resource partitioning between the species.
C) They are not separate species.
D) There is natural random variability.
E) Mutations have resulted in an inferior species with defective bills.
B
You might also like to view...
What are the four major types of biological molecules?
What will be an ideal response?
The structures labeled “B” in the figure are
a. zygospores. b. haploid spores. c. ascospores. d. gametes. e. zygotes.
Mucus-secreting cells and cilia in the bronchi serve what function?
a. help air exchange b. trap and remove bacteria and airborne particles c. destroy inhaled bacteria d. warm inspired air e. increase carbon dioxide removal
Which phase occurs during mitosis?
A) first gap phase B) metaphase C) second gap phase D) S phase