What is an opportunity cost? the most desirable alternative given up as the result of a decision any good or service we barter for another good or service a choice between two equally desirable goods or services the cost in dollars and time of any decision

A choice between two equally desirable goods or services is the correct answer.

Explanation:

It is a concept of macroeconomics. It is defined as the cost and alternative of the particular choice and is the value of the most valuable choice out of all the choices which were taken. It is not shown in the financial reports. It can be used by the business owners to make informed decisions when there are many options available to them. These costs gets easily overlooked if one is not careful about it.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.