nekathadon
19.08.2019 •
Biology
Genetic drift is best described as the redistribution of the frequency of gene occurrence in a(n)
a. population
b. organism
c. ecosystem
d. disaster
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Ответ:
The right answer is A. population.
Genetic drift is one of the mechanisms of evolution that leads to the creation of new species from populations of individuals. This mechanism is that of random variation of allelic frequencies within a population and over generations.
Ответ:
mutualism.
Explanation:
Mutualism can be defined as an symbiotic relationship or interaction between two or more living organisms of different species that typically involves each organism benefiting positively. Therefore, mutualism influences the survival and reproduction of living organisms in their habitats.
In this scenario, young hermit crabs pick up sea anemones which live on their shells. The stingy tentacles of the anemone keep fish from eating the hermit crab, and the sea anemone is able to eat leftover food from the hermit crab. Therefore, the relationship between the sea anemone and the hermit crab is best described as mutualism because both of them are benefiting from the interaction.
Simply stated, the sea anemone provides protection (security) from predators for the hermit crab while the hermit crab provides food for the sea anemone.