True or False. Phylogenetic methods based on DNA sequences and data from the fossil record both show that the evolutionary link between birds and crocodiles runs through dinosaurs
A. true
B. false
B
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Geneticists can create sequences of DNA from RNA using enzymes called ________.
A. palindromes B. reverse transcriptases C. restriction endonucleases D. ligases E. DNA polymerases
Which of the following is NOT a correct match?
a. hydrosphere; ice caps b. lithosphere; airborne particles c. atmosphere; gases d. hydrosphere; rivers e. lithosphere; Earth’s crust
In the biosynthetic pathway for conversion from homoserine to methionine, you identify a Neurospora crassa double mutant Met1/Met2. This mutant will grow only if which supplement(s) are added to the minimal media?
A) homoserine only B) cysteine only C) homocysteine only D) cystathionine and homocysteine E) methionine only
Which of the following amino acids is not one of the 20 common amino acids found in cells?
A) leucine B) isoleucine C) glutamine D) proline E) pyrrolysine