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iren2701 [21]
3 years ago
9

(Fill in the blank) In comparing DNA and structural characteristics between plant species, the similarities that appear may indi

cate a ____________________ __________________between them. (Think of evolution)
Biology
1 answer:
stepladder [879]3 years ago
3 0

Answer:

Mutation

Explanation:

Mutations can be defined as changes in genetic material, which are the main source of existing genetic variation. For ensuring genetic variability, that is, ensuring that individuals have different DNA, mutations are considered an important point in the evolution of living beings.

It is through mutations that important adaptive characteristics emerge, in addition to essential characteristics remaining in species that are different but that have similarities.

These processes also guarantees the selection of species most adapted species.  Mutations can be beneficial, neutral or harmful (genetic diseases or genetic "failures") and, therefore, are not targeted, occurring at <u>random</u>.

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suter [353]

Answer:

The best example of environmental influence that would most likely result in natural selection is that a food resource disappears in a pond, and some frogs in a population can eat the remaining food resource, while others cannot.

Explanation:

Among the environmental factors that can influence natural selection at a given time is the availability of food. Natural selection, from the point of view of evolution, is influenced by adverse environmental conditions, being food shortage one of them.

In conditions of food shortage in a pond, as in the example of the frog population, only the most apt will be able to take advantage of nutritional resources, while the less apt will not be able to survive. The ability to survive with little food available becomes an inherited trait that will be passed on to future generations.

In any case, tolerance to adverse conditions becomes adaptation, which translates into survival and reproductive success.

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