Which of the following statements is CORRECT?
a. Convergent evolution results in unrelated organisms developing very dissimilar traits.
b. A bird's eye is analogous to a whale's eye.
c. A bat's wing is homologous to a moth's wing.
d. Adaptive radiation is a special case of divergent evolution.
e. Natural selection plays only a small role in the process of adaptive radiation
Ans: d. Adaptive radiation is a special case of divergent evolution.
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Which of the following body fluids does not transmit HIV from human to human?
A) blood B) semen C) saliva D) vaginal fluid E) breast milk
A culture medium consisting of agar, peptone, and beef heart is a
A) chemically defined medium. B) complex medium. C) selective medium. D) differential medium. E) reducing medium.
The following steps occur during multiplication of retroviruses. Which is the fourth step?
A) synthesis of double-stranded DNA B) synthesis of +RNA C) attachment D) penetration E) uncoating
A particular tRNA molecule includes the anticodon sequence AUG. What would be the corresponding sequence in the noncoding strand of the DNA molecule that encodes the mRNA that this tRNA would pair with?
A. AUG B. ATG C. UAC D. TAC