EVOLUTION
THE ORIGIN OF LIFE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Binomial nomenclature is no longer valid
|
|
|
Improved technologies, including DNA technologies, have furthered our understanding of the relationship between organisms
|
|
|
The evolutionary history of some groups are uncertain
|
|
|
The concept of species has changed over time
|
Detailed explanation-1: -Reasons: New organisms are constantly being discovered and for classifying them, the new system needs to be used. This is why the new classification system is constantly developed to classify the organisms based on the similarity in characters.
Detailed explanation-2: -Prior to being able to sequence DNA, organisms were described and categorized solely by their distinct morphologies (physical characteristics) and ecological roles. The ability to sequence DNA has revealed a great deal more about where an organism belongs taxonomically and helps pinpoint new species.
Detailed explanation-3: -Technology associated with biology has advanced throughout the years, which has allowed the current classification system to be enhanced by using microscopes, biochemistry and DNA evidence. Originally Linnaeus’s system relied purely on human judgement in order to compare the characteristics of various organisms.
Detailed explanation-4: -Answer and Explanation: Classification systems aren’t static; they change over time based on newly gathered information, such as molecular information about a species. For example, for many years the largest category in the biological classification system was kingdom.
Detailed explanation-5: -How does the recently developed DNA technology help scientists establish a more accurate classification scheme? Information on DNA can often indicate relatedness between organisms and even provide data on how long they have been evolving separately.