Soil erosion can be caused by acid rain, mining, and water
Fitness is a measure of reproduction success (how many offspring an organism leaves in the next generation, relative to others in the group). Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits( traits determined by many genes).
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A virus infects the cell by attaching fibers of its protein tail to a specific receptor on the bacterial cell wall and then injecting the nucleic acid into the host, leaving the empty capsid outside.
In viruses with a membrane envelop, the viral envelop merges with the host cell membrane and is taken in to the host cell by a process called pinocytosis, then releases its nucleic acid inside the host cell to be intergraded with host cell genome.
Answer:
(B) Only those salamanders with the highest evolutionary fitness will survive the bottleneck event, raising the allelic frequencies of their traits.
Explanation:
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.
