Answers for the entire assignment for e2020! This will help future people in order to get a excellent grade! :)
Determine whether each statement below describes traditional or modern classification.
(Answers)
Traditional Classification is based on similar appearance
Modern Classification is based on evolutionary relationships
Modern Classification is known as Cladistics
Traditional Classification is known as Linnaean classification
Which piece of information provided the stimulus for the shift from traditional classification to modern classification?
Answer: An understanding that species share a common ancestor
Fill in the blank below with the vocabulary word that best completes the sentence.
Using a ______ clock, scientists are able to estimate the amount of time that two species have been evolving independently.
Answer: molecular
How does the molecular clock work?
Answer: It compares the number of mutations that exist in the DNA of two different species.
Select the correct word from the drop-down menu to complete the sentences.
______ are branching diagrams that depict the evolutionary relationship among species.
Answer: Cladograms
_____ is a point in a cladogram where a single ancestral lineage breaks into two or more descendant lineages.
_____ is a group of organisms that includes an ancestor and all of its descendants.
_____ is any named group of organisms, whether they form a clade or not.
Answer(s):
Node
Clade
Taxa
According to the cladogram, which of the following is the derived characteristic shared by amphibians and reptiles?
Answer: Lungs
After much research and DNA analysis it has been determined that species in the same clade are actually more distantly related than originally thought. What is one way that the cladogram may change because of this information?
Answer: A node would be introduced
According to the cladogram, which species are MOST closely related?
Answer: D and E
Use the cladogram about fish to answer the following questions.
Which of the following best describes the organism located at point B?
Answer: Has jaw, but no bones
The organism at location D is the ______ to organisms at location A, B, and C.
Answer: Ancestor
According to the cladogram, arthropods are MOST closely related to which group of organisms?
Answer: annelids
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