The California newt, Toricha toroso, lives in the coastal areas around Los Angeles. Which of the following is a valid null hypothesis relating fitness to survival of a bottleneck event in a coastal area where a small, isolated population of California newts resides?

(A) Only those salamanders with the lowest evolutionary fitness will be eliminated by the bottleneck effect, lowering the allelic frequencies of their traits.
(B) Only those salamanders with the highest evolutionary fitness will survive the bottleneck event, raising the allelic frequencies of their traits.
(C) Surviving the bottleneck event will be random, so any change in the allelic frequencies of the salamander population is not attributed to fitness
(D) Surviving the bottleneck event will be random, so there will be no changes to the allelic frequencies due to the bottleneck event.

Toricha toroso is a type of salamander which lives in the coastal areas of California after the bottleneck event. Bottleneck event is a kind of event in which population of organisms are reduced due to harsh climatic condition. In these harsh climatic condition of the environment, Toricha toroso survive because of the fitness of this salamander. Fitness plays a vital role in the survival of organisms.

aliasger2709 aliasger2709 · Answer 2 · 2022-01-10T16:38:03+01:00

The theory that states that no statistical association and importance are present in a given data of a single experimental attribute is called the null hypothesis. The two parameters for a community are independent and have no relation.

Option (C) Survival of Salamanders will be random is correct.

Survival of a bottleneck event can be explained as:

The survival will be spontaneous as it has no relation to the fitness and the allele frequency.

Bottleneck experimentation is an experiment that investigates and studies organisms downsized to extreme climatic circumstances.

Therefore, the valid null hypothesis is enduring the bottleneck event will be spontaneous, so any modification in the allelic frequencies of the salamander inhabitants is not attributed to fitness.

Learn more about the null hypothesis here:

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