Studies using DNA sequences suggest that the three arthropod subphyla Chelicerata, Crustacea and Uniramia
A) had three different evolutionary origins.
B) have probably evolved from a common ancestor.
C) evolved jointed appendages and exoskeletons independently.
D) have polyphyletic origin as chelicerates have spiral cleavage.
E) should actually be in different phyla.

Question

Quizplus · Accepted Answer

Studies using DNA sequences have shown that Chelicerata, Crustacea, and Uniramia likely evolved from a common ancestor, indicating a monophyletic origin for arthropods. This supports the idea that their shared characteristics, such as jointed appendages and exoskeletons, are due to common ancestry rather than convergent evolution or independent origins.

Studies Using DNA Sequences Suggest That the Three Arthropod Subphyla