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Allushta
15 days ago
8

The California newt, Toricha toroso, lives in the coastal areas around Los Angeles. Which of the following is a valid null hypot

hesis 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.
Biology
2 answers:
lana [1.1K]15 days ago
0 0

Answer:

The correct choice is C.

Explanation:

Genetic drift resulting from a bottleneck can alter the random distribution of alleles and can even result in allele loss. The likelihood of inbreeding and a reduction in genetic diversity may rise, potentially contributing to inbreeding depression. Smaller populations are also more prone to the accumulation of harmful mutations.

lana [1.1K]15 days ago
0 0

Answer:

(B) The salamanders that exhibit the greatest evolutionary fitness will endure the bottleneck event, which will lead to an increase in their trait allelic frequencies.

Explanation:

Toricha toroso is a species of salamander native to California's coastal regions following a bottleneck event. A bottleneck event occurs when a population experiences a drastic reduction due to severe environmental conditions. In such challenging climates, Toricha toroso thrives due to its fitness, which is crucial for the survival of species.

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