A Population of 1,000 Birds Exists on a Small Pacific

Multiple Choice

A population of 1,000 birds exists on a small Pacific island.Some of the birds are yellow,a characteristic determined by a recessive allele.The others are green,a characteristic determined by a dominant allele.A hurricane on the island kills most of the birds from this population.Only ten remain,and those birds all have yellow feathers.Which of the following statements is true?

A) This situation illustrates the effect of a mutation event.
B) The hurricane has caused a population bottleneck and a loss of genetic diversity.
C) The ten remaining birds will mate only with each other,and this will contribute to gene flow in the population.
D) Assuming that no new birds come to the island and no mutations occur,future generations of this population will contain both green and yellow birds.