Evolution led to certain fishes, such as lung fishes to adapt to terrestrial mode of life. these fishes were the ancestors of modern amphibians. which evolutionary mechanism is represented by this example?

a. convergent evolution
b. adaptive radiation
c. sympatric evolution

The correct answer is-

A. Convergent evolution.

Convergent evolution can be described as evolutionary process by which organisms independently evolve similar characteristics due to adaptation in the similar environmental conditions.

As per the information given in this question, lung fishes adapted to terrestrial mode of life and considered as the ancestors of modern amphibians.

Amphibians also came into existence by adapting to terrestrial mode of habitat and they also developed lungs for respiration on land.

Thus, it represents the example of Convergent evolution.

Therefore, option A) is the right answer.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.