Multiple Choice
How does the goal of evolutionary classification differ from that of Linnaean classification?
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1. Introduction to Biology
Natural Selection and Evolution
Multiple Choice
Which trait of humans is NOT shared by the Last Universal Common Ancestor (LUCA)?
A
Use of DNA as genetic material
B
Cellular structure
C
Bipedal locomotion
D
Ribosomes for protein synthesis
Verified step by step guidance1
Understand the concept of the Last Universal Common Ancestor (LUCA): LUCA is the most recent common ancestor of all current life on Earth. It is believed to have been a simple, single-celled organism with basic cellular machinery.
Review the traits shared by LUCA and modern organisms: LUCA likely used DNA as its genetic material, had a cellular structure, and utilized ribosomes for protein synthesis, as these are fundamental features of all known life forms.
Analyze the trait 'Bipedal locomotion': This refers to the ability to walk on two legs, a characteristic specific to certain species, including humans. It is a complex adaptation that evolved much later in the evolutionary timeline and is not a feature of LUCA.
Compare the traits: While DNA, cellular structure, and ribosomes are universal traits shared by LUCA and all life forms, bipedal locomotion is unique to certain organisms and not a universal trait.
Conclude that bipedal locomotion is the trait NOT shared by LUCA, as it is a specialized adaptation that evolved in humans and some other species long after LUCA's existence.
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