#Question id: 4614
#Section 2: Evolution
Which of these is the extant (that is, living) species most closely related to species X?
#Question id: 4615
#Section 2: Evolution
Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?
#Question id: 4616
#Section 2: Evolution
Logically, which of these should cast the most doubt on the relationships depicted by an evolutionary tree?
#Question id: 4617
#Section 2: Evolution
Which of the following is not an observation or inference on which natural selection is based?
#Question id: 4618
#Section 2: Evolution
Which of the following observations helped Darwin shape his concept of descent with modification?
#Question id: 4619
#Section 2: Evolution
Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S.aureus infections were caused by MRSA. How can this best be explained?