A population of frogs was reduced 60 years ago by a major outbreak of a disease.The population was reduced to a very small size (less than 300 individuals)and the frequency of mating with relatives increased.Recently,this population has been observed to have morphological defects and reduced survivorship.There has also been a reduction in fecundity.As a result the population is becoming smaller and smaller.What is happening to this population and how could it be helped?
A) There is nothing to do for this population. It is too small and sick.
B) Increase breeding in the population to offset the amount of competition.
C) Raise eggs in captivity and then release them later. Intra- and inter- specific competition is too great for this population
D) This population is experiencing an extinction vortex. The population may be rescued by introducing new alleles to increase genetic diversity.

Question

Quizplus · Accepted Answer

The population is experiencing an extinction vortex due to genetic drift caused by a small population size, increased inbreeding, and reduction in genetic diversity. Introducing new alleles can increase genetic diversity, which can help stabilize the population and prevent further decline. Option A is incorrect as there are potential solutions. Option B is incorrect as increasing breeding in a population with reduced fecundity and morphological defects may worsen the situation. Option C may not be effective as releasing captive-raised individuals into the wild could face issues such as competition, predation, and adaptation to the natural environment.

A Population of Frogs Was Reduced 60 Years Ago by a Major